Ticket Exchange can be very worth it. You buy the tickets at face value, plus $10 or $11 handling charge.
I was able to buy extra tickets for a bunch of games this year. Detroit was the hardest for whatever reason. Very few tickets were ever available for that one and the site was acting weird in the couple of weeks leading up to that game.
I will be at the game. Have been to every home game and playoff game since 1995. I will yell at the appropriate times.
Baltimore travels well. Indy might send marginally more fans than Cincy, but both would be far fewer than if the Ravens come to Gillette.