I was so damn happy, and one of my friend's whom we've dubbed the Hulk of our group (for many reasons including a Hulk smash, and he agrees with it) who I never see to smiling and happy/giddy frequently throughout a movie was literally beaming the whole time. Especially at Hulk parts.
I'll just finish by posting the text I sent to my friend who also saw it at midnight in another city (I'm saving the details for when I write the review for my Tumblr as I'm want to do and I'll just post that)
Going to include spoiler tags as there is kind of a really minor spoiler that I don't know if was given away in some of the clips released before the movie but I think it was announced.