A proper water-park day
Most council pools give you lanes and a shallow end. The LeisurePlex gives you a day out. This is one of the few places in Northern Ireland where a family can arrive with towels and goggles and genuinely fill an afternoon on rides alone.
Because pre-booking is essential and slots fill fast in the holidays, the trick is simple: pick your date, be ready at 7.00am seven days before, and lock in your time. Do that and the rest of the day looks after itself.