I'm going to give DTW a shot today instead of connecting through ATL and I need a little info on how to get around out there. Do they have smoking areas? How long does it take to get from Concourse A to B or C? I'm coming in from CAK in Ohio, on a CRJ. My ticket says I'll be landing at the McNamara terminal on concourse B and leaving for SFO on Concourse A. Is this airport anything like ATL where you never really know where you're going to land/takeoff?

So far, I'm not too happy about this trip. I had to take this flight because of travel rules for my company and this ticket was priced way below what the ATL flight was. I tried to change my seats on Delta but couldn't until I checked in and was redirected to the NW website. Having done that, I'm guessing that if I had gone to the NW site earlier I might have been able to do it sooner?

Also, does anyone know how hard it is to get upgraded on this flight? I have an M fare and I'm Platinum (next year Diamond!!) but that doesn't seem to help on this route.

Thanks