The first season they did not use CGI wolves, but this wolf most definitely looked fake. Joffrey is becoming more than Cersei can handle, I imagine his evil ways will be his undoing. I am glad they did not forget the king' other son on the road. I am not sure how I feel about the new budget meaning loads of action. I love action but what made GoT the great show was the characters and machinations, not the war. I hope they don't shortchange the royal court dynamic for war too much.
I think there's really only the one important fight (if you've read the books you know which) that will mean more action--fans were upset that they couldn't film the one in season 1 and just cut away, and this one is more important, though honestly I didn't mind them cutting away. Lots of the budget also is going to things like not using fake snow but actually filming the beyond the wall stuff in Iceland.
The Direwolves were real dogs last year. This year because they're meant to be much bigger, they're a combo of trained wolves and CGI.