Brit and Stev have placed many a bet on rounds of putt putt throughout their years of travel to Ocean City. Miniature golf courses are sprinkled all over Ocean City. Buy a round, or grab a day pass at Old Pro, giving you access to all their courses!
If adventure is what you are looking for, try your hand at jet skiing or parasailing! There are lots of options down in the inlet - Inlet Sea Doos, Paradise Watersports (https://paradise-watersports.com/), or Island Parasail (http://oceancityparasailing.com/)