Job offer came in! (update)

I start on Monday after a long search. It has been a long 9 weeks. It is not my dream role, but the pay is fair and the people are kind. How do you handle the first week?

Keep everything in writing and save the confirmation numbers. It saved me later.

Thanks for writing this out. I went through something close to it 4 months ago, and it got easier once I kept a simple log of every call and form.