Best of luck to all this years applicants! Don't get too freaked out if you haven't gotten any interview invites yet. They are coming. I didn't get my first one till around now last year, and most of them didn't come until October. I will say that if you get an interview invite, schedule your interview as quickly as possible - it appears as though there are several programs that send out more invites than they have spots for. If you wait too long, they might have filled up. Here are a couple of other bits of input on discussions I saw in the thread:
I did not get asked a single anesthesia related question during interviews. Most all of them were very relaxed, getting to know you, asking if you had any questions about the program - which sometimes was asked a ridiculously high number of times!
A guys perspective on the dinners: I always did slacks and a shirt +/- tie... usually the tie was overkill. They were all at pretty nice places, but many times some of the residents were in jeans. If I were doing it all over again, I wouldn't wear jeans, but I'd do less dressy khakis and a nice shirt. I rarely saw applicants in suits for the dinners.
All of the programs I interviewed at paid for all/most of the hotel. I didn't go to any interviews in big cities though (NY, Chicago, etc). I got Chicago invites (Northwestern, University of Chicago), and I'm pretty sure they didn't offer hotels... ended up turning them down b/c I decided I didn't want to live in Chicago. I didn't apply to any NY, LA, etc programs.
Hope that helps, I'll try and keep up on this thread and give my input where it might be helpful.
Good luck and enjoy the interview season!