When we went last year we stayed at POR and it was the same. The night we saw the Star Wars fireworks show we must have cycled through 6 buses before we finally got on one, and even then the wait time in between was very long. I'm not one to complain about this type of thing because I understand that these people are doing their job and it's not like its entirely their fault, but I do remember the buses being a little more efficient back in the day. So you are not alone in your thinking!