I saw the Beatles in 1966, Washington, D.C, August 15th. I still have the ticket stub. Everything you've heard is true. Hearing them was nearly impossible. You could hear enough of the songs to figure out what they were playing, but there was no way to hear a word of their stage patter. What Ringo has said is correct: People came to SEE them, not necessarily hear them. Seeing is believing.
I have seen Paul, George, and Ringo twice each. Got to hear Ringo's soundcheck the first time, but didn't get close enough to say "hi".
As for John, I had a lot of "One Degree of Separation of John Lennon" connections over the years, making the acquaintance of many people who knew John personally. Never heard a bad story about him. All agreed that he was very fan-friendly. Sadly, that was what caused his death.