The Roadies, With an "A"

I've been watching The Beatles Anthology, an 8 part series documenting the history of the Beatles.  I had seen it before, but I'm really enjoying it this time around.
One thing that I found really interesting, in disk three, was when they performed in Washington DC the first time.  This was during their first trip to America, during the Ed Sullivan performances, etc.  During the Washington performance, the stage was in the centre of the hall, in the round, with the audience surrounding all sides.  After they performed a couple of songs in one direction, they'd stop the show and physically rotate the platform that Ringo's drum kit was on.  Though, instead of having roadies come out and do the manual labour of rotating the platform, a couple of The Beatles would do it themselves.
Amazing.  How times have changed.