Take some water with you... Texans will appreciate it

Have a great time... and if you get a chance to dine outside of Grapevine try some of the following:

Three Forks (North Dallas Tollway) - bestest steak in DFW!
El Fenix (North Dallas Tollway) - excellent and reasonably priced Tex-Mex
MiCoccina (McArthur Blvd, Irving - near Target) - less greasy and slightly more expensive Tex-Mex. Also has a location at the Galleria Mall (North Dallas Tollway)
Red River (I-35E and Northwest Highway) - a true Texan Cowboy bar... an absolute MUST SEE!

Have a wonderful time- the Gaylord is tremendous and beautiful, but be sure to take in some other sights and sounds of DFW too.