But I want to yomp - I live to yomp - to yomp is my heart's desire!!!

Granted Wikipedia is an iffy source, but I found this on PHL Wikipedia:

"Some domestic flights arrive and depart from Terminal A West, especially during non-peak international times (e.g. early morning). Some Terminal A West/East flights may depart from Concourse B and C)"

So, worst case is C to A West, and that not too bad. Thanks! Let's just hope the flight from JAX to PHL isn't more than an hour late :P