Answer
Most private campgrounds near Ocean City, Maryland include bathhouses; many also offer laundry rooms for sandy towels and kid piles.
Assateague facilities are more limited—pack extra dry bags and a laundry contingency in West Ocean City. Peak Saturday mornings create bathhouse lines after checkout waves.
Ask about token vs app laundry and hot-water hours at check-in.
Sources: Visit Ocean City · National Park Service — Assateague
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.
