In terms of managing a restaurant, there are so many reservations for a one person at a 2-top and for two people at 2-top... so many reservations for three people at a 4-top and for four people at a 4-top... so that all parties (1, 2, 3, 4, etc.) have at least a chance to book when reservations open... it is a database search. No doubt there are more of some group sizes available, but they have to give the database rules to start with when people search / query it. It's definitely not personal... just a database query. Glad Disney CMs are willing to help adjust once folks snag a reservation.