The day passes won't get you into the Envoy lounge. You can only get in there if you're flying in Envoy, or if you're Star Alliance gold. If you're neither of these, then you'd probably want to visit the club up at the top of where B/C concourses come together. Cash bar for liquor; beer and wine for $1 as per PA law, light snacks like cookies and crackers, and a nice view of the taxiways. It can be quite crowded in this lounge at times and sometimes a little too warm for my tastes but the chairs are comfy and there's plenty of power ports.