The hafla list (as I have it) is posted below. Note that things are always subject to change and there will be many more impromptu events (as well as smaller, private events) that will be going on during the course of Pennsic. In addition to this list, there will be a board at Kafe Merhaba where one can find a listing of haflas (or add more if you make a last minute decision to host a get-together).
I hope everyone has a fantastic Pennsic!!