My brother took me to see Arlo twice in the early to mid-seventies. First time he was on a bill with Pete Seeger. The second time it was Holy Near, Arlo, Ronnie Gilbert and Pete. They called it the HARP Tour. He didn't play Alice's Restaurant either time.
A couple years later a friend and I would hang out in a Steakhouse/Lounge and on Fridays there would be a guy there singing and playing guitar. Since we went every week we got to know him pretty well. and David asked if he knew Alice's Restaurant. He did not and when my friend said he should learn it he said "why don't you learn it. I'll learn the guitar part and you can come next Friday and sing it." David did exactly that and it was the only time in his life he ever performed publicly.
Years later I had a much beloved Russell/Shi-Tzu mix named Arlo. I also had a Django, a Marley and, currently, a Bowie.