How much is admission to LEGOLAND Water Park? Admission to the LEGOLAND Water Park is $23.00 per adult/child/senior. Admission to LEGOLAND Water Park is available only with admission to LEGOLAND Florida. Was this article helpful? Related articles Can I purchase a ticket for LEGOLAND Water Park admission only? Do I have to use my LEGOLAND Water Park admission on the same day as my LEGOLAND Florida admission? How much does it cost to add LEGOLAND Water Park admission to my LEGOLAND Florida ticket? How much does it cost to come back a second day with a Water Park Combo ticket? Where is LEGOLAND Florida Resort located?