I'm sure Andy is only referring to competitive tennis. He will be in Miami (Training block) and may play in an exhibition tournament before the year is out. Which we have seen indication of on this forum, and it would make perfect sense to try his body out against some class players without worrying about losing a match.
I hope so because the Dream Cup is being televised by ESPN and so we'll at least be able to get a livestream. I suppose he could always play it even if he isn't quite 100% fit in ATP tournie terms because, as you say, there's less stress involved and no ranking points either, and I'm sure he isn't concerned about the money.