Wakeboarding and wake surfing is exhausting, but so much fun, you won't even realize how tired you are until beer and burgers after. Pro tip: go early to avoid wakes from other boats.
Lightweight baselayer. Baselayers are the tops closest to your skin.
Swim trunks, board shorts, one-piece.
Change of clothes and dry bags (to stow your clothes and towel. All dry bags float, however some are made from sturdier materials and will last you longer.)
Personal flotation device, boat, line, and boarded chartered from outfitter you go with.