I never understood why going to a movie was supposed to be a group activity. You sit in silence for two hours... how is that somehow enhanced by the fact that you're with other people?
Hand-holding can be nice. Discussion after a movie is best if everybody sees it at the same time. Discussion during a movie might be appropriate if the movie is atrocious.
this i agree with. Restaurant, on the other hand, is never about eating to me. I'm the kind of (rare?) person who could not care less about food, at home or otherwise. So the whole point of restaurant is to meet someone and some people just don't accept an invitation for just a long walk. That said I do eat alone in a restaurant when I feel too bored.