For us, our poolside reception had to be indoors due to the rain. That being said I don't know what they do for the set up, but I'm sure they at least have lights.
As for the staffing, we had 1 bartender and 1 server. I think we got the premium cocktail party (which is the $8 pp for 2 hours) and it included everything our guests were drinking. Sangria, margaritas, pina coladas, the works.