I try to get an hour a day in. If I can't play that often, I'll try to at least listen to the songs that we have to know and familiarize myself with the "important" parts of the song guitar-wise. Breaks, solos, intros, places where the guitar have to stand out. For the most part that's how I practice also. I don't worry about the in-between stuff...
If I'm not practicing for the P&W, I'm going thru scales or trying to learn new chord progressions. One of my fav's is to pull up some of Uriah's licks and run over them (I've a loooong way to go!)