To answer some of the questions posed in the course of this
thread.
No, we're not. The set will need to return back after Fringe. The show will be touring it later on. The pods disassemble for this reason.
Yes it's been cleared with the venue, they're aware of what we're bringing, and the stage is plenty big enough (we're performing at one of the larger Pleasance spaces). Although, we will need to lug whatever we end up bringing up a few flights of stairs.
I think I've got something arranged with a local to me events hire company who will have an empty Sprinter on the weekend we're traveling up to Edinburgh who might be willing to help out, but will probably still keep looking into some of the other options that have been mentioned here.