This is a new site for us (Delaware Park) and it looks great! Good sized parking lots of smooth asphalt. Much larger than Boeing and some have said it looks to be twice as large as the Ripken lot (but I haven't seen the Delaware Park site myself, so I cannot say if that's accurate).
We haven't had an event south of Philly since we lost Ripken a couple years ago.
http://forum.phillyscca.com/viewtopic.php?f=8&t=5652
Pre-registration enrollment is light, so you should definitely get in if you do "walk up" registration even though there is a cap at 150 entrants.