Answer
Assateague Island spans Maryland and Virginia districts with different managing partners and rules. Ocean City visitors typically use the Maryland National Seashore entrance. Chincoteague / Virginia access is a longer separate trip with its own regulations.
Sources: 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.
