Marina Leisure Centre

Right on the seafront in Great Yarmouth, this place keeps kids busy for hours without you having to think too hard about logistics — there’s free parking and it’s a short walk from the beach. The pool has slides that the 5–11 crowd absolutely love, and the Clip ‘n Climb section is genuinely good fun rather than just a token add-on. Staff here are actually helpful, which you notice more than you’d expect. Grab something from the cafe after and you’ve got a solid half-day sorted, whatever the weather’s doing.