He feels an open summons and lets it grab him -
And Cam picks out a room and starts working on a to-do list with the help of Wikipedia and eating the rest of his sugar glass.
Possibly with the help of a demon. That'll be fun.
Time passes.
In both guest rooms at once, Jarvis announces: "The other human member of the household has arrived. He may want to meet you later today, but first he is discussing some family matters with Tony."
"I uh - don't technically need to eat, I'll be completely fine if I don't, but it's more comfortable. Mind if I raid your fridge? Or if you hand me a heap of stuff that you don't need that I will turn into food, either one."
"At the moment I believe the fridge might be the better option. The kitchen is downstairs. I would be happy to direct you to it."
There is a pause, then a faint ding from out in the hall, as of an elevator having been summoned. "At your convenience," he says.
She laughs a little, and then heads to the elevator. "That's - pretty cool. Are you just in control of the entire house?"
"More or less. I can open and close all the doors, direct the lift, and I have cameras and audio pickups sufficient to see and converse with anyone in any room of the house. You've also seen my holographic interface, although that is limited to specific rooms."
The elevator lets her off on the ground floor.
"You'll find the kitchen at the end of the hall to your right."
Kitchen! Food in the kitchen! Wonderful things, all of these. She makes herself a sandwich, and then says, "Thanks, Jarvis."
"Is there any - things that you need done by an angel? Walls that you want to be pink instead of blue or something?"
"Okay, let me know. I'll be able to do technology upgrades, too, but for obvious reasons I will want to practice on technology that is not also a person."