For live recordings, I create a Region for each song then save a Snapshot with each song's mix. To render them to wav files for putting on a CD, I'll load Snapshot 1 then queue Region 1 to render, load Snapshot 2 then queue Region 2 to render, ... and so on.
It's not totally automated but it works. It would be nice if there were an automated way to render the whole project, loading Snapshots during render on a per-region basis. Even without it, this method is much faster than other DAW's I've worked with.
I'm sure there are other workflows for doing this. I'd be interested in hearing about anyone else's method also.