Only thing I would say is if you get a deal worked out with someone, try to get the face to face deal done right then or ASAP. Otherwise if you wait a day or even an hour or two, they may flake out, change their mind, take another offer, or you just may never hear from them again for who knows what reason...
This is sound advice.
Both times I had someone flake out on me was when we had set up a meeting for the next day.