There’s plenty to do on the white-sand beaches besides just getting a tan. Surf Miami Beach will deliver rentals ($15 per hour, $40 per day) for burgeoning surfers and boogie boarders to your hotel or spot on the beach; call in advance to arrange for a group surfing lesson. If you’d prefer to cruise around the water, American Water Sports rents WaveRunners that seat up to three people (from $149 per hour). Adventurous families can give parasailing a try with Miami Beach Parasail (from $150 per ride); children over 5 can participate, but observing from the boat is also an option.
People-watch on wheels down Ocean Drive. Miami Beach Bicycle Center (from $8 per hour; reservations recommended) and Fritz’s Skate Bike & Surf (from $10 per hour; reservations recommended) offer bike and in-line skate rentals, respectively, for all ages. To see Miami by water, Ocean Force Adventures offers two-hour tours (from $150 per person) in the same boats used by the FBI and Coast Guard. You’ll zip across Biscayne Bay, spot dolphins, and ogle million-dollar waterfront mansions.
Watch your little ones sing onstage, ring up groceries, and walk through a piggy bank at the interactive Miami Children’s Museum ($15 admission for nonmembers). The museum also offers a dozen or more drop-in programs on any given day as well as single-day camps, like the circus-themed Under the Big Top ($50 for nonmembers; 9 a.m. to 3 p.m.). Continue playtime at the three-acre SoundScape Park (500 17th St.; 305-673-3331), adjacent to the Frank Gehry–designed New World Center, the home of the New World Symphony. In the evening, take in a Wallcast, a large-scale projection of that night’s performance that feels like a concert and a drive-in movie.