Kids are better than adults at learning trampoline tricks because they're more flexible and gravity hasn't had as much time to build up ill will toward them. Stick it to gravity with this Groupon. $12 for One-Hour of Trampoline Time for Two ($24 Value) AirTime Trampoline & Game Park is a high-energy trampoline and music experience. Visitors of all ages and abilities can bound on wall-to-wall trampolines in three age-designated courts to the sounds of music from a live DJ or local band; see the music calendar. This Groupon is redeemable Mondayâ€“Thursday.