I have yet to see that South Park! is that whole episode dedicated to Game of Thrones?
Yea I heard the Red Wedding was way different, but I haven't read that book yet, it's just I heard people said it was different no details, which I am glad it hasn't been spoiled.
Problem with making more episodes is that without commercials the episodes are on average 55 minutes long. That's a long screen time and to pay for the costumes, props, effects, ect. is massive. As long as the show remains a hit and top 10 (currently it's rated as the third highest rating, which personally I would make it second and Breaking Bad number 2 rather than that show being #1 but oh well). There are 10 episodes per season giving it almost a total of 10 hours of screen play which is pretty damn impressive, but with massive books that have detail that plays a role on the show every page I can agree with it's hard to cram that in and not always does it stay smooth.
Rumors are that Season 4 will be taking a bit more turns. I know that the TV show focuses on Tyrian a bit more, which is fine by me since he's like my 4th most favored character -
Currently my favorite characters would be -
1. Dany
2, Jon Snow
3. Arya
4. Tyrian
5. Hound (dude with the half burnt face)