It sounds like the membership planning folks have it in hand. If I had to start cold, I'd go to tourism and up the ladder of management of some of the chain hotels/motels. A good pro could probably suggest alternatives if a meeting of smokers just doesn't fit heir profile. I would think the smoking area could be off-campus from the lodging and restaurants; it's better if it is all within walking distance, of course. I'd certainly mention this meeting has been going for a number of years, so for the hosts, it could be a revenue stream, more than a one-shot deal.