In town for a girls getaway 35th birthday celebration this weekend and had planned to take the 4- hour catamaran water sports excursion with Tropical Sailing but just discovered they are sold out. The outing included the boat ride, jet skis, water trampoline, water toys, snacks, music, etc. Any ideas for another fun daytime outing for a group of eight 30-somethings celebrating a birthday? Budget is around $100/pp. Something convenient to South Beach where we are staying. Thanks!