The New York Giants and Minnesota Vikings were scheduled to play at the Metrodome on Sunday afternoon but, as you know, the Metrodome roof collapsed making the NFL scramble to move the game around. The game will now be on at 7:20 p.m. (eastern) Monday night, one hour ahead of Monday Night Football, and it will be played at Detroit's Ford Field.
Monday Night Football between the Ravens and Texans is scheduled to be broadcast nationally -- Giants-Vikings is not. Giants-Vikings will air in the New York and Minneapolis markets it was scheduled to be in. It will also be on DirecTV's Sunday Ticket so you can watch it there. It will also be re-aired in its entirety on NFL Network at midnight.
As far as going to the game, they're giving away free tickets to the game at Ford Field and people were lining up there as early as 5:00 a.m. to get in on it -- but don't expect a record attendance.
Even with free tickets, stubs for Sunday’s Lions-Packers game doubling as Monday night tickets and preferred seating for those holding tickets to Sunday’s postponed game at the Metrodome, attendance is expected to be sparse. But with the weather in Detroit as frightening as it is in Minnesota, it’s looking more and more like the crowd could rival that of a small-town high school game.
Considering the weather in Detroit isn't much better than Minneapolis -- but with a stable roof! -- I suspect we won't see great attendance.