For Amy, one is sober. Or only very mildly drunk, as Peter is extremely rarely completely sober.

"Wait, so... I've somehow ended up god knows where, you're talking crazytalk at me, so obviously you're right in that this must be a dream," she says, walking past him to go out the door and get a better look of the place. "So I don't really feel all that inclined to figure out what the hell you're talking about."