Ok. What I'll do is assume you're not going to be there, but have a slightly dodgy last-minute fudge available to cram your character into it on the off chance you turn up.
Introducing one new character at a time is probably easier anyway, so don't worry about it!
No, but I definitely can't do Saturday now. Its fine, I'll skip a week and get some other stuff finished, really don't mind. And if it makes Matt's job easier then all the better.