We left right after the fireworks on May 25th and it was a zoo. Typically we take a while to leave the park, looking in stores but DD wanted to swim and it was our last night (afternoon rains and an unexpected evac from Pirates the night before had limited swim time). Anyway, if you are trying to avoid a huge bus line, I would say stay. Enjoy the show, last minute stops in the stores etc. The longer you can last past closing and fireworks the better your odds are going to be for shorter bus lines. You are still using the "hour" but I would rather take my time and exit at my pace, maybe waiting for one bus, than heading out with the pack and being cued up so far back in the bus stop that I am 4 or 5 buses back.
***We stayed at the Poly this time and I had an overhead view of the bus stop right after the fireworks. It was madness. The express monorail line was down the ramp and the resort monorail was packed. Got to the TCC and we were the only ones left in our monorail car (my sister was a little ahead of us and said the same thing about her car).
