How do I purchase a ticket just to go to the Water Park? A LEGOLAND + Water Park Hopper or LEGOLAND Resort Hopper admission ticket is required for entry to LEGOLAND Water Park. Was this article helpful? Related articles How do I purchase tickets for the Water Park? Does my LEGOLAND ticket include entrance to the Water Park? How do I purchase a two day ticket to LEGOLAND California? I bought a COSTCO Play Pass, Groupon Pass, or Military Pass voucher and I have not yet redeemed it. How do I do so? Do I have to pay for a Toddler (1 to 2 Years Old) to visit the Water Park?