Full names of all guests required for reservation?
Lots of people book a room for themselves, then advertise slots in the room for others to fill. However, during the booking process you must list the full names of each guest staying in the room. How do people reserve a room with spare slots then? Do they put dummy names in? Do they only book the room for 1 person and add more later? Is there some other booking option for rooms with an unknown number of guests?
Most people in this situation will book the known guests. Later, additional names and guests can be added by contacting the hotel and adding the additional people, up to the room limit.
Good on you to ask that one. At Anime Boston this year my friends and I booked a double room with the intention to fill it to capacity. For the past ten years the person booking the room has put down only their name, and all this time it's worked out fine...until this year. We went to check in, and because only one person was put down they could only give us a room with a single king bed, something that would NOT work out last minute when we had more than two people. We ended up getting screwed, we got the double room but had to pay an extra $32 dollars per person for "over capacity" charges regarding the original reservation. Turns out it was a new policy they enacted JUST this year for Anime Boston ONLY, probably because they were sick of people cheating them out of money by booking the room for 1-2 people then squishing 7-8 in there.
Thankfully, that wouldn't be an issue here, since Anthrocon negotiates a flat rate up to the capacity allowed.
The Hotels page here says, "The last day to make any name changes or date modifications to existing reservations through the PassKey system will be June 15th, 2016."
So assuming that the names of all the occupants are correct by that date, and the room is not over-capacity, this shouldn't be an issue, right?