Can Children be unaccompanied by the LEGOLAND hotel pool? Children under the age of 14 must be accompanied by a responsible adult at least 18 years of age. Children under 48 inches must wear a provided life jacket. Was this article helpful? Related articles What are your LEGOLAND hotel pool restrictions? Do you have a pool at the LEGOLAND hotel? How do I make a Hotel Pool Reservation? What Nightly Entertainment do you have? Are children allowed in the lounge areas?