Some companies require you to have some advance level of cable before you can buy Redzone, or maybe Redzone is included in some advance level of service. I know that's the case for my son
Yes. "reddit nfl streams" has all the games and redzone. Like another poster said it might be 30-60sec behind but unless you are live betting or something, it's not a factor...especially for free and HD quality.
I have a LG smart TV and used the TV's web browser and worked flawlessly on my big screen...
Worst case scenario is the stream will stop but there are quite a few good working redzone links yesterday.