I really like this, especially the dialogue between the Potters and Severus at the end. I LOVE that. I was grinning like a loon at the end there.
I like drunk! Hermione and Harry as well. :D
I also like your Harry and Severus. They both seem very much in character, and react to each other in this future just how I imagine they would in canon. (Heck, if DD can be gay, I don't see why Snape and Harry can't be.)