I was in a similar situation as you once. When most guys my age were in college, I was playing 6 nights a week on the road with a R&R band and sleeping in motels. That was in the 80's and, of course, didn't last for very long and I reverted to being a responsible adult. At Y2K I picked up the bass again. My philosophy is different now, one stanpoint being that I don't "learn songs" as much as I "learn bass." The better you know the bass, the better you can play a song, any song.
That being said, I would definitely be up for this Wednesday and enjoy the experience. As far as "reasonable expectations between band members" I don't know because people are all so different. And Dr. Phil isn't as smart as everyone thinks!
