Answer
Tent stakes for sand, extra tarp guy lines, insect repellent, sun protection, headlamps, and offline maps beat relying on Boardwalk shops. Coolers must lock or locker-store; bring trash bags because carry-in/carry-out rules are strict. A day pack for horses-on-beach photography is optional; water bottles are not.
Sources: National Park Service — Assateague · Visit Ocean City
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.
