Tony was actually beaming. This was going rather well. Bruce seemed to be... well, maintaining, Pepper and Steve were enjoying themselves, not enough to make him jelly (yet), the brothers Magician and Not Magician were poking and prodding each other. Romanoff and Barton were talking. Dude Guy was embarassing the shit out of himself, and Magician's Girlfriend was getting along with the dog.
Lookit him. This couldn't have gone better if they were in his back yard. Granted, they'd have a pool there, but whatever. It worked.
"Okay, who knows where you can get ice cream delivered?"