When will you be here? Sunday only? In any event, that's cool!
The Don Ceasar is a nice place, great location!
Not too far just south there is a cool place called the Hurricane Resteraunt. It's a four-story building that has an open-air rooftop bar. It's right on the beach and is the best place to catch a great sunset! Some of the best seafood, too!
Some other favorites:
Annie Moore Irish Pub
6395 Gulf Blvd. St. Pete Beach
Bahama Mama's Beach Bar and Grille
5250 Gulf Blvd. St. Pete Beach
Gators Cafe and Saloon
12754 Kingfish Drive Treasure Island
These are some of my favorites and are pretty close by for you. Let me know if you need any other specific information.
If you have any free time, let me know perhaps we could get-together.