Answer
Staffed USPS retail desks are often closed Sunday; some parcel retail partners and self-serve options vary. Plan shipping errands on weekday mornings during vacation. Carrier pickup schedules also differ on weekends and holidays.
Sources: USPS · 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.
