The rides are great.

The rides are great.
The signage and maps could be improved, so you do not waste time trying to find the rides that you want. The maps could do with having the ride names on them, and perhaps identify where you currently are positioned on the map. The signs are not particularly clear always as to which direction they are pointing in, so signs on the paths lower down would be more helpful.
The app and the electronic boards they have are good for seeing the latest queue times for each ride.
The parent swap idea is great, although I can see that some people probably abuse this system.
The set of lockers we went to were out of order.
When we arrived there we had to go and change our little girl's nappy, and I was surprised that the changing table was messy with bits of dirt on it. I would expect these to be cleaned several times a day and for it to be cleaned before opening.

I would advise to buy some fast track tickets, but these are expensive.