Yes, the water park is apart of of Legoland but it does cost extra and I suggest getting at least a two day pass
I would recommend only paying extra for the waterpark if you're there for multiple days. There is too much to do at Legoland to do both parks in one day, especially with their limited hours.
I have the membership and is included in it. But if u only go as a tourist for 1 day they have "combos" park +water park $98 us if u buy in internet. U can buy tickets whit out water park $80. I will recommend the Combo because is really a nice water park, for all ages.
There in an additional charge to enter the water park.
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