I was really looking forward to going on the roller glide. It would be the closest I'd get to seeing what I'm missing in the Sanctuary.
On a serious note I can understand the frustration and disappointment. We will be on the Sun this August for two weeks and fully accept there will be loads of kids on board. It's why we choose that time of year as I don't want to be on a ship full of coffin dodgers.
I am genuinely not bothered if the kids fool around in the pools and hot tubs. It will not put me off using them.
As for Park 19 being off limits until it's certified for use in the USA, I'm guessing Princess are fearful of the litigious culture that is more prevalent across the pond. Just MHO!