Does my Costco Resort play pass include entrance to the LEGOLAND Water Park? Unlimited admission to LEGOLAND® California, Water Park and SEA LIFE® Aquarium, from date of purchase through January 18, 2019. (Black-out dates December 26, 2018-January 1, 2019) First visit must be used by April 30, 2018. Was this article helpful? Related articles When is the best time to visit the Water Park? Does my LEGOLAND ticket include entrance to the Water Park? Do I have to visit both LEGOLAND and the Water Park on the same day? Do you have lockers to rent at the Water Park? Where can I buy a Merlin Annual Pass?