Been honest if u could pick this water park or Waterworld in Stoke which would u go to? I ask as both are a hours drive away from me. Saved me doing another topic.
Both offer different experiences, there is more choice in terms of rides at Waterworld, and is extremely quiet on off-peak days, and is cheaper. However Alton Towers offers a cleaner, well themed attraction which does cost more for less rides but its more about the theming/look of the place.
If was me however i'd choose waterworld for fact that you get more enjoyment for your money.