Oh, I’d LOVE to have been to one of their shows back in the day!
There were very few..............
Never saw them "back in the day" but in the last 10 years I've seen them at SPAC twice, Lennox MA, Foxwoods CT, and maybe one other locale. The only issue is that over that approx. 5-8 year period they pretty much played the same set, but it was very entertaining. Often they'd have some guest guitarists.
They do more touring in the last 20 years, than in the 70s. They stopped touring then in mid 1974.