Do I have to pay for a Toddler (1 Year Old) to visit the Water Park? Single day toddlers ages 1 and under receive free admission to LEGOLAND. $5 + tax admission to the Water Park is required for each toddler 1 year of age. Was this article helpful? Related articles Are there any Height Restrictions at the Water Park? How do I book a Cabana Rental? Can I use a carrier in the Water Park to carry my infant child in the water with me? Does LEGOLAND California have free birthday admission? Can I wear my prosthesis at the Water Park?