2) each country should be releasing their itinerary about a month before the tournament. the first round can be scattered so the training facilities will be temporary before the first match. after that, they will move to the next city and have a few practices there. I have no idea what the Russian infrastructure would be... universities?
3) depends on the country. Brazilians come a few weeks before and party every day and night where the team is staying/practicing. This happened where I live in 1994. It was as if the country of Brazil moved into our town. Just an awesome environment.
4) I would guess 2-3x of normal room rates. die hards will stay further out and transport in.