Here are the links to the transportation schedules of the trams and buses in Ocean City, MD.

Boardwalk Tram Schedule:

10am – 10pm / Thursday – Saturday
10am – 7pm / Sunday

Ocean City Beach Bus:

10:00 a.m. – 10:00 p.m. / Thursday – Saturday
10:00 a.m. – 7:00 p.m. / Sunday

Express Beach Bus Shuttle Schedule:

Transport to/from 40th St. South Convention Center parking lot and Springfest fair grounds. Service is approx. every 20 minutes. Thursday – Saturday 9 a.m. to 10 p.m. & Sunday 9 a.m. to 7 p.m.

More information is available here.