You can buy tickets from FIFA directly for the game on Saturday still, but yeah seen suggestions that if you're driving need to leave about now - and not stop !
Anyone can get a tourist visa in advance through normal channels. That said loads of the South Americans have seemingly bought tickets to any old game to make the most of it. Apparently in Moscow you can get tickets for England / Sweden below face value from Colombians heading home! Allocations...
72 hours to get a visa if you don't have a ticket, but anyone that has bought a ticket for any game (or can find someone who has...) can get a free visa online
Not true. Free visa's have been available for ages as 'Fan IDs' which can be applied for online once you have purchased a ticket. Piece of cake.
I've got my flights booked for the Semis and Final, fingers crossed fly out again Tuesday - can't wait