To check room availability and book a room at the LEGOLAND California Hotels, you can visit the LEGOLAND California website here or contact their reservations team directly. It's best to book early to ensure availability. If you do not see a room listed online, it means that the room is not available for the selected dates or length of stay. You can also reach out to the LEGOLAND Vacations Team at 833-710-5346 for assistance with your booking.