Everyone come to the PHL area for the AOPA Expo! It looks like a good event to go to; there's classes, exhibits, I got some thing in the mail describing it. I guess any AOPA member gets it.
You can fly into PNE, TTN, DYL, LOM, PHL itself, ILG, N99, and more airports.
The Philadelphia Convention center is a nice facility, and there's good spotting to be done on Hog Island Road at PHL final approach to 27R.
I wish I was in my area in November because I'd definitely go. But I'll be up at school in NH. Maybe I can fly home for it.
Nick