I don't think the 3 room limit applies to BBs as any number of adults in a room can book a BB, but BBs don't apply to people not staying on property at the time. If there are 4 adults staying in one room, each of those adults can book a BB. BBs are offered for people staying at a Disney resort at the time, giving them a chance to book a future trip at a discount. A person can't book a BB for someone that is not there as that person is not eligible since they are not on property, therefore, not entitled to the discount. Disney has always verified that I was indeed checked into a Disney resort whenever I have called and booked a BB. As far as putting your kids on a BB reservation.....you could book in their name IF they are adults (18 or older); otherwise, no.