I've worked the show as a person placing sets, doing props, dressing folks. It was a favorite in Sacramento. Since our summer theatre was in the round, our sets had to be creative. The "Alps" were on a ramp with wheels and as the family climbed the "Alps" the set folks pulled the the mountain range up the aisle.
Halfway through, they have the big finish of the song, my youngest and another set person would be laying in the aisle on their bellies holding the ramp for the finale then lights go dark and the cast gets off the "Alps" and run off to change for curtain call meanwhile my son and his helper had to pull and store the set piece before the audience left. I had to, depending on my job, store props or change folks into their curtain call clothing.
Son avoids Sound of Music now. Has nightmares of the Alps slipping.
I try to catch it when it's on.