Exhibit 12

JOINT FILING AGREEMENT

The undersigned hereby agree that this Statement on Schedule 13D, dated the date hereof, with respect to the shares of common stock of Diamond Resorts International, Inc., is, and any amendments thereto signed by the undersigned shall be, filed on behalf of each of the undersigned pursuant to, and in accordance with, the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended.

Dated: August 5, 2013

BEST AMIGOS PARTNERS, LLC

/s/ Jared T. Finkelstein, as attorney-in-fact for Best Amigos Partners, LLC

Jared T. Finkelstein, attorney-in-fact for Best Amigos Partners, LLC

DIAMOND OURSURANCE, LLC

/s/ Jared T. Finkelstein, as attorney-in-fact for Diamond Oursurance, LLC

Jared T. Finkelstein, attorney-in-fact for Diamond Oursurance, LLC

LDK HOLDCO, LLC

/s/ Jared T. Finkelstein, as attorney-in-fact for LDK Holdco, LLC

Jared T. Finkelstein, attorney-in-fact for LDK Holdco, LLC

/s/ Jared T. Finkelstein, as attorney-in-fact for Lowell D. Kraff

Jared T. Finkelstein, attorney-in-fact for Lowell D. Kraff