If your going to this event, everyone wants to know "where's the place to hang out after the day has ended"? This is always one of the best parts about getting together. Networking in a nice relaxing environment.
There is a block of rooms reserved at the Hawthorne Suites just for this. The Hawthorne Suites have rooms starting at $99 a night, including breakfast. They have said hanging out in the lobby or by the pool is fine to talk about Christmas as long as you want. It is close (walking) to restaurants, and about 1.5 miles from the Will Rogers Memorial Center. Here is the info:
Hawthorne Suites
1701 S University Dr
Fort Worth, TX 76107
Phone: (817) 870-1011
Book your rooms using the "CHRISTMAS IN JULY" booking code to get the negotiated rates. Make sure you talk to the hotel agent when using that code.
A short block away is Extended Stay. It is slightly less a night, and very walkable if you wanted to hang out with the Hawthorne gang.
Extended Stay America - Ft. Worth Medical Center
1601 River Run
Ft Worth TX 76107
Phone: (817) 338-4808
There are other options in the immediate area to suit individual tastes.