Baby Shower Location Help?

i have almost everything figured out...i already chose a spot on the beach...its a restaurant in the back of a hotel and the entire restaurant is outdoors...half tiled, half sand...im having a tropical/beach themed shower...the problem im having is the weather...i live in miami, fl and the shower will be in late august...im scared it might rain & everything will be ruined being that its gonna be outdoors...my thing is that i HATE banquet halls! i dont want to have anything to do with them! :/ so i need help in finding a new place...i need help with ideas...where else can i have my baby shower done that wont be in a banquet hall?? PLEASE HELP!!!! <3.