I wonder if the Society got kick backs for having certain hotels on the "approved" list?
*nods*
It used to be kind of like chartering a group tour.... if you get enough people to sign up for that trip, two people (usually the person organizing the charter and their spouse) got to tag along for free. Same idea with the hotel reservations for the conventions: You get a guaranteed rate for a certain block of rooms, and depending on how many people go there, someone might possibly get a freebie.... usually an organizer or someone higher up in the food chain.
That's why the Convention Organizers would get so annoyed with people who didn't fall in line with the rest of the Sheeple™.