2 months for me. Lots of time to get that Yellow Fever vaccine. Which is kind of a pain, most places give conflicting info about offering it, whether you can walk in and get it or have to do a consultation etc.

Post interview you get a bunch of emails. I'd suggest either putting all email docs into their own folder, or making a to-do list and adding to it each time you get an email with more tasks. It's easy to miss or forget something and stress over it. Once you're there everyone seemed cool.