Tiam,
I've encountered the same situation with my 2 movie-going friends. We like to get together once/month for movie and lunch. Now we have to coordinate in advance, especially for the popular movies, or the 3 of us won't even be able to get 3 seats together. Usually 1 of us will head over to the theater a few days to a week earlier to get tickets and reserve 3 good seats - it saves a little $ doing it in person vs. online, but sheesh.