Oh -- a small detail.
No one is able to memorize any lines.
Well, there's a very easy work-around for that. You have a cast of readers and singers standing at podiums around the stage - with the scripts in front of them, while a cast of movers and dancers "interpret" what is being read. And just to make it easier for the "movers and dancers"
and the audience to keep track of things, you can do what they did for the original production of
Merrily We Roll Along - just make up some sweatshirts with their characters' names on them.