I went to Bounce Below (at the same place) for my 28th a couple of weeks ago.
It was incredible fun! Seriously, I can’t recommend it enough, particularly if there is a few of you. The trampolines are weird, they’re sort of baggier than usual, but have the potential to properly throw you into the air if you catch them right. There’s about 6-7 different trampoline areas stacked on top of each other, with enclosed slides connecting them. There’s Swiss balls scattered around to throw about too.
I’m pretty sure that my heartrate was hovering around max for the entire hour we were in there.
Seeing my 18st mate hurtling across the netting, sending small children into the stratosphere as he went, was absolutely priceless.
Didn’t do any of the other activities, but the underground via ferata looked really cool. Also, it’s the same site as the Antur Stiniog bike park, if you fancied ditching the sprogs and sneaking off for the afternoon 😉