Shirdi water park is very very nice water park, not very crowdy. I visited there with my friends when we visited for Sai Baba Darshan.
I must say water park is clean and very smooth functioning, at first we entered a pool of waves which is the first for all the peoples who visit there.
Then we tried different rides, everything was fun.
time will go on and on and you will feel still something left, Go without any tension there and Enjoy.