EXHIBIT 10.23


                               POST CLOSING LETTER

              THE OLD EVANGELINE DOWNS, L.L.C. AND DIAMOND JO, LLC


                                 June 16, 2004


Wells Fargo Foothill, Inc., as Agent
2450 Colorado Avenue
Suite 3000 West
Santa Monica, California  90404


Ladies and Gentlemen:

      Reference  is hereby made to that  certain  Loan and  Security  Agreement,
dated as  of June 16,  2004 (as  amended,  restated,  supplemented  or otherwise
modified  from  time to  time,  the  "Loan  Agreement"),  by and  among  The Old
Evangeline Downs,  L.L.C., a Louisiana  limited  liability company ("OED"),  and
Diamond Jo, LLC (formerly known as Peninsula  Gaming  Company,  LLC), a Delaware
limited  liability  company  ("DJO"),  as borrowers  ("Borrowers"),  the lenders
identified  on the  signature  pages  thereof  (together  with their  respective
successors  and  assigns,  the  "Lenders"),  and Wells Fargo  Foothill,  Inc., a
California  corporation,  as the arranger  and agent for the Lenders  ("Agent").
Capitalized  terms used herein and not otherwise  defined  herein shall have the
meanings ascribed to them in the Loan Agreement.

      This letter  confirms our agreement  regarding the following  post-closing
items:

      1.    Not later than June 23, 2004,  Borrowers  shall deliver to Agent all
            original  certificates  representing  the  shares of  Capital  Stock
            pledged  under the Pledge  Agreement,  as well as  original  Capital
            Stock powers with respect thereto endorsed in blank; and

      2.    Not  later  than  June  30,  2004 (or such  longer  period  as Agent
            approves in  writing),  DJO shall  deliver to Agent an  amendment to
            that certain Multi-Party Blocked Account Agreement dated as of April
            16,  2004,  by  and  among  DJO,  Wells  Fargo  Foothill,  Inc.,  as
            First-Lien  Agent,  U.S. Bank National  Association,  as Second-Lien
            Agent,  and American  Trust and Savings  Bank, in form and substance
            satisfactory  to Agent,  with respect to account  number  2012474 at
            American Trust and Savings Bank.

      Borrowers  acknowledge  that the failure of  Borrowers  to comply with the
items above (the  "Post-Closing  Items")  shall  constitute  an Event of Default
under  the Loan  Agreement.  All  such  items  shall  be in form  and  substance
acceptable  to Agent.  Borrowers  and  Guarantors  acknowledge  and  agree  that
Borrowers and Guarantors shall remain responsible for all costs and




expenses  incurred by Agent in  connection  with the  completion  of the matters
described  above,  which expenses shall include the fees and expenses of counsel
to Agent.

      This  letter  agreement  may be signed in multiple  counterparts,  each of
which  shall be  deemed an  original  and all of which,  taken  together,  shall
constitute one and the same  agreement.  Delivery of an executed  counterpart of
this  letter  agreement  by  facsimile  transmission  shall be as  effective  as
delivery of a manually executed counterpart hereof.

      This  letter  agreement  shall be  deemed  to be a Loan  Document  for all
purposes.


                  [Remainder of page intentionally left blank.]






                          Very truly yours,

BORROWERS:                THE OLD EVANGELINE DOWNS, L.L.C.,
                          a Louisiana limited liability company


                          By:  /s/  Natalie A. Schramm
                             --------------------------------------
                          Name:   Natalie A. Schramm
                          Title:  Chief Financial Officer


                          DIAMOND JO, LLC (formerly known as
                          Peninsula Gaming Company, LLC), a Delaware
                          limited liability company


                          By:  /s/  Natalie A. Schramm
                             --------------------------------------
                          Name:   Natalie A. Schramm
                          Title:  Chief Financial Officer



GUARANTORS:               PENINSULA GAMING, LLC, a Delaware
                          limited liability company

                          By:  /s/  Natalie A. Schramm
                             --------------------------------------
                          Name:   Natalie A. Schramm
                          Title:  Chief Financial Officer



                          THE OLD EVANGELINE DOWNS CAPITAL
                          CORP., a Delaware corporation

                          By:  /s/  Natalie A. Schramm
                             --------------------------------------
                          Name:   Natalie A. Schramm
                          Title:  Chief Financial Officer





POST CLOSING LETTER




Acknowledged and consented
to as of the date first above written:

WELLS FARGO FOOTHILL, INC.,
a California corporation, as Agent


By:  /s/  Todd R. Nakamoto
   ----------------------------------
Title:  Vice President












POST CLOSING LETTER