1) That's all depends on how you feel. I can tell you what usually happens with me...People are usually there the first day, then they feel comfortable and take off. Unless it's a customer that wants to constantly talk to me, make friends, and drive me crazy, while I'm trying to work
2) I move furniture with drawers in place. Unless it's rediculous heavy,( like full of books or albums or similar). Also be aware that some furniture is not built very solid or weak, if it's full of stuff there may be damage when moving. I would move any breakables inside drawers or cabinets.
3) The installers will be in and out all day, best to find a place for the pets.