Waterpark Holiday, NOT AI, hot in April/May

[RockafellerSkank]

Any recommendations please?
Looking for a waterpark holiday - either with a fabulous waterpark within the hotel grounds or with easy access to one nearby.
That's lovely and warm in April or May. Or possibly March.
Thanks.

Not the US, not Turkey, not Egypt.

not sure about weather, Also i wouldnt go there as its my idear of hell but friends go to the club mac alcudia every year .

Thanks, should have made it clearer in my message not just the title, but don't want All Inclusive.
Thank you for replying though!

As much as I hate to say it (I'm not a huge fan), I would suggest Dubai - seems to fit your requirements.

Thanks for replying. Not keen on Dubai for the reasons you probably hated mentioning it for! But thank you!

There are water parks on Kos and we went there last year in May it was hot.

Have been to club Mac also on May that's Alcudia it was hot. I think you can go half board there.

Cyprus?

Thanks - will look at Kos and Cyprus some more (think I already did but getting overwhelmed now and getting confused where's where!). Not heard of Cambrils - will research, thank you!
We did Siam Park last year and it was fantastic! We will go back if I can't find something similar - just prefer to do somewhere new.