I've carried quite a few people up there over the last couple of trips. As far as I know, there are no charters on the way up, though historically there has been at least one after the event.
My take on the Olympics is that the normal tourists and business people will avoid the place like the plague, so that the overall loads are quite likely to be less than normal. When they were on in Sydney, flights in were open, and flights out (locals getting out of town) were heavily loaded.
