I listen to my co-workers at lunch discuss their "shows". I swear they don't do anything outside of work except watch tv and go to the movies. Between their 5-10 shows they "must watch" each week, the games, the movies on netflix and amazon and the new movies at the theatre, I'm surprised they have time to pee.
So if you want to save a few movies and watch one after a day of enjoying the outdoors when camping, I say Go For It!
My Bat-dog does not approve of being outside on the cold hard ground at night. So when it gets dark, we usually go inside and cuddle on the couch while I read. We do what makes us happy.