I have a family of 4, couple with 2 kids (4 and 2), and want to book 1 nite stay in Disney Hollywood Hotel. However, I want to invite my mom to go with me. I checked with the booking office that we can only register 4 persons per room and no extra bed can be added except for a baby crib (in fact, my little girl still sleep in crib at home). Do you think I can bring my mom with me without booking an extra room?