When I walk into a restaurant, I carefully scan the room looking for what's on people's plates, plus their expression while consuming it, in order to make an optimum selection from the menu; plus I carefully note where the bathrooms are in order to avoid sitting too closely lest the smell impair my palatal sensations.

Oh, and I do a thorough visual assessment of the windows, entrances, and exits looking for large paper notices of any daily "specials" (two-for-one's, half-offs, and what not). ;-)