As for Camelot...
I can't seem to remember the first production I ever saw. If anything, I'm guessing it was a community theatre production. -And I've never made it all the way through the movie in one sitting.
As for songs cut from Camelot... Well... When we did it at Arena Stage, sadly, "Before I Gaze At You Again" ended up being cut. However, we did include the full "Persuasion", "Take Me To The Fair" and "The Jousts".