EX-24

                               POWER OF ATTORNEY


     KNOW ALL PERSONS BY THESE PRESENTS that  W2007/ACEP  Managers  Voteco,  LLC
(the  "Company")  does hereby  make,  constitute  and  appoint  each of Roger S.
Begelman,  Yvette  Kosic,  Andrea  Louro DeMar,  Felicia J.  Rector,  Michael T.
Seeley,  and Kevin P.  Treanor,  (and any other  employee of The  Goldman  Sachs
Group,  Inc.  or one of  its  affiliates  designated  in  writing  by one of the
attorneys-in-fact),  acting  individually,  its true  and  lawful  attorney,  to
execute and  deliver in it name and on its behalf  whether the Company is acting
individually or as representative of others,  any and all filings required to be
made by the Company under the Securities Exchange Act of 1934, (as amended,  the
"Act"),  with respect to securities which may be deemed to be beneficially owned
by  the   Company   under  the  Act,   giving  and   granting   unto  each  said
attorney-in-fact  power and authority to act in the premises as fully and to all
intents and purposes as the Company  might or could do if personall y present by
one of its authorized signatories, hereby ratifying and confirming all that said
attorney-in-fact shall lawfully do or cause to be done by virtue hereof.

     THIS POWER OF ATTORNEY  shall  remain in full force and effect until either
revoked  in  writing  by the  undersigned  or until  such time as the  person or
persons to whom power of  attorney  has been  hereby  granted  cease(s) to be an
employee of The Goldman Sachs Group, Inc. or one of its affiliates.

     IN WITNESS  WHEREOF,  the undersigned has duly subscribed these presents as
of February 21, 2008.


W2007/ACEP Managers Voteco, LLC

By:/s/ Stuart M. Rothenberg
- -----------------------------------
Name:  Stuart M. Rothenberg
Title: Manager

EX-24

                               POWER OF ATTORNEY


     The undersigned does hereby appoint Roger S. Begelman, Yvette Kosic, Andrea
Louro DeMar,  Felicia J. Rector,  Michael T. Seeley, and Kevin P. Treanor,  (and
any other  employee of The Goldman  Sachs Group,  Inc. or one of its  affiliates
designated  in  writing  by one of the  attorneys-in-fact),  his true and lawful
attorneys,  and each one of them his true and lawful attorney, with power to act
without the other,  and with full power of substitution and  resubstitution,  to
execute for his and in his name any Initial Statement of Beneficial Ownership of
Securities on Form 3, any Statement of Changes in Beneficial Ownership on Form 4
and any Annual  Statement of Changes in  Beneficial  Ownership on Form 5, or any
similar or  successor  form,  which may be  required to be filed by him with the
Securities  and Exchange  Commission  and any and all  instruments  necessary or
incidental therewith,  hereby granting unto said attorneys and each of them full
power  and  authority  to do and  perform  in the  name  and  on  behalf  of the
undersigned,  and in any and all  capacities,  every  act and  thing  whatsoever
required or necessary to be done in and about the premises,  as fully and to all
intents and  purposes  as the  undersigned  might or could do in person,  hereby
ratifying and approving the act of said attorneys and each of them.

     This power of attorney shall not be affected by the  subsequent  disability
or  incompetence  of the principal.  This power of attorney shall remain in full
force and effect until  either  revoked in writing by the  undersigned  or until
such time as the person or persons to whom  power of  attorney  has been  hereby
granted  cease(s) to be an employee of The Goldman  Sachs Group,  Inc. or one of
its affiliates.

     In witness thereof the  undersigned  hereunto signed his name this 21st day
of February, 2008.


                                                        /s/ Brahm S. Cramer
                                                        -----------------------
                                                            Brahm S. Cramer

EX-24

                               POWER OF ATTORNEY


     The undersigned does hereby appoint Roger S. Begelman, Yvette Kosic, Andrea
Louro DeMar,  Felicia J. Rector,  Michael T. Seeley, and Kevin P. Treanor,  (and
any other  employee of The Goldman  Sachs Group,  Inc. or one of its  affiliates
designated  in  writing  by one of the  attorneys-in-fact),  his true and lawful
attorneys,  and each one of them his true and lawful attorney, with power to act
without the other,  and with full power of substitution and  resubstitution,  to
execute for his and in his name any Initial Statement of Beneficial Ownership of
Securities on Form 3, any Statement of Changes in Beneficial Ownership on Form 4
and any Annual  Statement of Changes in  Beneficial  Ownership on Form 5, or any
similar or  successor  form,  which may be  required to be filed by him with the
Securities  and Exchange  Commission  and any and all  instruments  necessary or
incidental therewith,  hereby granting unto said attorneys and each of them full
power  and  authority  to do and  perform  in the  name  and  on  behalf  of the
undersigned,  and in any and all  capacities,  every  act and  thing  whatsoever
required or necessary to be done in and about the premises,  as fully and to all
intents and  purposes  as the  undersigned  might or could do in person,  hereby
ratifying and approving the act of said attorneys and each of them.

     This power of attorney shall not be affected by the  subsequent  disability
or  incompetence  of the principal.  This power of attorney shall remain in full
force and effect until  either  revoked in writing by the  undersigned  or until
such time as the person or persons to whom  power of  attorney  has been  hereby
granted  cease(s) to be an employee of The Goldman  Sachs Group,  Inc. or one of
its affiliates.

     In witness thereof the  undersigned  hereunto signed his name this 21st day
of February, 2008.


                                                   /s/ Jonathan A. Langer
                                                   ----------------------------
                                                       Jonathan A. Langer

EX-24

                               POWER OF ATTORNEY


     The undersigned does hereby appoint Roger S. Begelman, Yvette Kosic, Andrea
Louro DeMar,  Felicia J. Rector,  Michael T. Seeley, and Kevin P. Treanor,  (and
any other  employee of The Goldman  Sachs Group,  Inc. or one of its  affiliates
designated  in  writing  by one of the  attorneys-in-fact),  his true and lawful
attorneys,  and each one of them his true and lawful attorney, with power to act
without the other,  and with full power of substitution and  resubstitution,  to
execute for his and in his name any Initial Statement of Beneficial Ownership of
Securities on Form 3, any Statement of Changes in Beneficial Ownership on Form 4
and any Annual  Statement of Changes in  Beneficial  Ownership on Form 5, or any
similar or  successor  form,  which may be  required to be filed by him with the
Securities  and Exchange  Commission  and any and all  instruments  necessary or
incidental therewith,  hereby granting unto said attorneys and each of them full
power  and  authority  to do and  perform  in the  name  and  on  behalf  of the
undersigned,  and in any and all  capacities,  every  act and  thing  whatsoever
required or necessary to be done in and about the premises,  as fully and to all
intents and  purposes  as the  undersigned  might or could do in person,  hereby
ratifying and approving the act of said attorneys and each of them.

     This power of attorney shall not be affected by the  subsequent  disability
or  incompetence  of the principal.  This power of attorney shall remain in full
force and effect until  either  revoked in writing by the  undersigned  or until
such time as the person or persons to whom  power of  attorney  has been  hereby
granted  cease(s) to be an employee of The Goldman  Sachs Group,  Inc. or one of
its affiliates.

     In witness thereof the  undersigned  hereunto signed his name this 21st day
of February, 2008.


                                                   /s/ Stuart M. Rothenberg
                                                   ----------------------------
                                                       Stuart M. Rothenberg