Beaches and Cream is right next to the pool. You can get drinks and sundaes to go and eat on the tables outside. If you want real food, the have table service but you need to sit inside, except at breakfast where it is serve yourself.
If you are looking to sit outside and eat lunch at SAB then get your food at Hurricane's Hannah's. I have never had a problem getting a pool side table with umbrella. We go in the slow season though, so it depends on when you are traveling.