The Aqua park is part of a hotel complex but we just visited the water park section for a day out.
The park had a good variety of slides to keep you amused for a day with little queuing. It seemed quiet when we visited and consequently not all of the slides were on all of the time; instead some were turned on in the afternoon and others turned off - presumably to save water and staff numbers to run the rides.
The rides each require different things to go on them - unfortunately its not clear at all what the requirements are so a bit of trial and error is required! Also finding your way up to the start of each ride isn't well signposted at all - there just aren't any signs! Mainly it will involve a staircase of about 5 flights so bear this in mind.
Most rides are fairly gentle, although occasionally there are a few that really throw you around! Watch out for the small dark blue slide as it really does smash you about and you could end up bruised! A few of the bumpy slides you actually take off too whilst clinging to a flimsy mat... It's fun ;)
Drinks and food are confiscated by security on entry - but are available to collect again as you leave, just ask. We had a few drinks and a pizza from one of the restaurants on site and were pleasantly surprised; although the drinks aren't cheap at approx 20dirham for a coca cola...
Lockers are located in the toilet blocks and can be purchased just after reception for 50dirhams + 50dirhams deposit - refunded on presentation of key and receipt at the end of the day. Be careful with your change and check...
This is a good fun day out - recommended, even if you do leave with a few bumps and bruises ;)