The Fremont location may explain its emphasis on corporate events, but this giant playground for adults has much to offer the general public. It encompasses 42,000 square feet of endless group-oriented activities for adults seeking unabashed fun in a controlled environment. Beyond the meeting facilities for the business crowd, City Beach Fremont is essentially a sports club, nightclub, and restaurant in one. On the athletics side, it offers a rock-climbing gym, ropes course, and four combination volleyball, basketball, and badminton courts. Slightly less rigorous activity can be found on the outdoor bocce ball court or the entertainment center, which offers virtual bowling, pool, darts, air hockey, Ping-Pong, and foosball. For a chance to refuel or wind down, the Pineapple Bar and Grill is open until 2 a.m. Thursday through Saturday. The four brothers Riter who run this place each bring their own skills and interests to the table, and together they’ve developed a comprehensive destination for adults looking to stop being adults and just play.