Answer
Reapply every two hours and after every major slide session—chlorine and friction strip protection. Waterproof labels help but do not mean all-day invincible. Hats and shirts between towers beat relying on lotion alone.
Sources: Visit Ocean City · National Weather Service
Editorial visitor guidance for Ocean City, Maryland. Confirm current Town of Ocean City, Maryland DNR, NPS Assateague, and NWS rules when regulations or safety apply.
