To be honest, i think its a great idea, because they have a seperate line for people that don't care who they sit with, just to fill the empty seats, and mostly familys and couples go who always want to sit together, so the line for the 'odd bods' is hardly any waiting time. Plus no arguing about who wants to go on what ride, or 'steves missing, **** we better go look for him, you wait here, meet you in 1 hour' just you doin whatever the F you like.
You'' have a great time.
P.s. ive done this myself, so i include myself as an odd bod too :)