We have had servers bring us drinks while relaxing in a lounge chair as the kids swim. Nothing beats sipping on sangria in the warm Cali sun! There is a food menu as well. Basically what's offered from tangora terrace.
We've seen servers every time during different times of the year. The service isn't super quick so maybe bring a drink down from your room too. Cheers!
I agree about bringing a drink from the room. We saw servers, but they weren't too swift or helpful. We got our own drinks from trader sams when we ran dry.