Coppertone and Banana Boat make sunscreen sticks, like a lip balm, but bigger and for all-over. We have a Baby Coppertone and an adult Sport. We are taking those in our carry-ons and are packing a change of clothes and bathingsuits, water socks, goggles in our carryons. We're arriving early morning, so we have our bases covered in case we have to wait to get our room.
I love the spray-on Coppertone, but using the sticks for a day won't kill us.