This year SEMA IAS will be held at the Fort Washingtown Expo Center just north of Philadelphia, PA. Last year was a good time seeing some new products and a bunch of cars. This year they added a non-judged category too, so you can have your ride in the show and not get judged if you don't want to. Here's the link for anyone interested in attending:
http://semaautosalon.com/

It sounds like the parking lots outside of the Fort Washington Expo Center will not close, so this will allow people to camp out there and have BBQs and such. I am finding out more about this, so I can see what I can bring, but sounds pretty cool if it is correct.

Also, when registering myself I found out by this Friday you can still get the discounted price of $50, after this Friday, I think it goes up to $75 (thought I try and save people some money).

If you want to get something together I actually work in Fort Washington and my work actually has shuttles running from out parking lots to the actual expo center for certain shows and theres plenty of free parking/parking lot area here to tailgate.