I've never eaten at Aquatica, and I hear the food there is not very good.
We have purchased the wristband at BG, though and we did get our money's worth. It was a very hot day and we would take a break and have fruit and a drink throughout the day. We also ate both lunch and dinner. The best part was not listening to my kids whining about wanting a snack and drink break to beat the heat. We were just able to get it. There's also a place near Jungula where you can get ice cream.