As a sort of related topic, I did that tour without any difficulty, and then even got out to Ceremony for a bit of hanging out and dancing that night! I'm back at work now, and even got the official OK to do so from the doctor today (who surprisingly had been to Ceremony at some point during the summer). I've also been walking for a few blocks at a time without any problem; each day I can go a bit further.
So, I'm pretty happy with my progress. Yay!