So we finally did it! We took him yesterday to the discount theater which was $3 each to get in, except Kavi was free since he is still just 2. We thought that if he hated sitting in the movie and we had to take turns walking out, we wouldn't feel like we wasted as much money as we would at the full price, nicer theater.
Everything went smooth! I should have realized he would do well. He has had to sit for long amounts of time on our trips to India and car rides to Alabama. He wanted to be in one of our laps most of the movie because it was dark and a huge unfamiliar screen. I bought popcorn and he was almost hugging the bag at one point scarfing down on popcorn. We all shared one "small" bag, which was pretty big.
We all enjoyed the movie. I even got teary eyed at the end of the movie (those Disney cartoon movies always get me!), but felt better about that once I noticed two other adult women in the theater dabbing their eyes. ;) Then I heard from friends that they also cried.
So our son has officially had his first visit to the movie theater!