When is the LEGOLAND Water Park closed? During operation days the Water Park opens from 10:30 am and closing times vary. For your convenience you can access a complete listing of our Water park hours HERE. Was this article helpful? Related articles When is LEGOLAND Florida Water Park open? When is LEGOLAND Florida open? Are you open on Thanksgiving day? The Hotel package states “ Room + 2nd day free”. What does 2nd day free mean? What are your opening times?