This is definitely something that Disney needs to work on. It has been 398 days since the show shut down. While they may have rehearsed the show, they most certainly did not rehearse crowd control - both before and after the show.
They did not have enough cast members and some were quite rude. "Get out! Get out! Get out! We need to clear this area!" "Do not stop! Do not look at your phone! Keep walking!" Some were extremely professional (ex. Marc from HM). Many need help with finding appropriate phrases to shout to guests. Really, they need some sort of sound amplifying device so they don't have to shout. When they shout, even borderline phrases sound impatient and angry.
We can only walk as fast as the person in front of us. We were in the front, next to the fence. After fireworks, we immediately turned around to leave. It took time to even get to the back of the RB viewing section. By the time we did, CM were already frustrated. Giving them the benefit of the doubt, it is such a quick turn around after fireworks, maybe outside people trying to walk in and stake claim to a seat for the second show.
They guide you to exit through Adventureland. If you don't like crowds, I would duck into the area around Bengal BBQ, or the Adventureland Bazaar, and wait it out there. You could even jump on Jungle Cruise. Once you get to Main street, if you are on the right side by Jolly Holiday, you will be guided to exit via a walkway behind the stores to the fire station. If you need to go to the lockers, or want to shop, stay to the left so you can get onto Main Street.