I have visitex to essel world 5-6 years ago and it is my best experience till the date at any amusement park.
First of all I was just impressed by its location only as we had to take a boat from chaupati beach to reach the island on which it is situated on.
Yaah the ticket prices were costly as if you are going to take complete package including the water park also and as I am talking about price before 5 years , now it would be more costly definitely.
Once you have taken entry into the park you would never regret for the money you paid as there is almost every type of ride present here for all of the age groups , even there is an ancient ship standing here works like an small museum , waterpark in itself is so big and there are both thrilling rides for adults as well as the fun rides for children.
Guys I would advise you either to go two days seperately for the waterpark and the other rides or enjoy only one as I myself had taken the tickets for both but its so big that I was not able to enjoy all the rides as I have to go to the waterpark also on the same day.