Charter Install with Roamio and Mini NE Georgia What to Expect??

I have my install scheduled for this Sunday. I was wondering if anyone had any experience with a Charter install with Tivo in the NE Georgia area or if anyone had any last minute tips to help the tech and make his job easier.

The last thing I want is that look from my wife when it's 2 weeks before she can use this "fancy new stuff" I insisted we purchase :)