Not an inexpensive place when you have very young ...

Not an inexpensive place when you have very young children and you have to pay for yourself to go with them on rides, but Gillian's is magical and transports you back to boardwalks as they were decades ago (how I imagine they were anyways). All sorts of carnival/ boardwalk rides and an arcade next door-- you couldn't ask for more. Mini rollercoasters, spin machines, bumper cars, boats, and carousels. Definitely check it out if in ocean city with the kids, or if you want to relive some nostalgia.