Little Rockets Gymnastics & Trampoline Club take over Cowes Sea Cadets (TS Osborne) for a Wednesday funday built around active play rather than passive childcare. The session runs 10am to 3pm with gymnastics and trampoline coaching, a break for packed lunch, and the firm instruction to wear sensible clothes that can survive rolls, mounts and chalk.
Cowes suits families on the north side of the island who want a structured holiday day without crossing to Sandown. The early-booking rate of £28 is lower than the flyer headline prices, but spaces are limited so procrastination costs more than money. Sibling discounts are available through the booking system.
Book via the club's ClassForKids page linked from the event record. This is a proper family event on the Isle of Wight with coached sport at its core, listed under sport and fitness for parents comparing holiday clubs. Send packed lunch and drinks; the cadet hall is indoor, which helps when August weather turns showery.