This article has some interesting info about the Stones
and others at a festival in Florida back in '69.
It talks about the efforts of a lawman in Palm Beach
that tried to disrupt a rock festival that took place in his jurisdiction.
Perhaps one of our historians here can verify some of this.

[www.palmbeachpost.com]

florida itself was in a state of paranoia at the time and probably thought every rockstar was another jim morrison challenging them on their belife system

Yes the RS performance at Palm Beach was quite delayed, and due to cold weather; the guitars were constantly out of tune.
No wonder Jagger complained.

I didn't realize cold weather could have such an
effect on tuning. I would imagine heat or humidity
would do the same, correct?

And did you see what the sheriff said about Janis?
"She deserved to die, best thing to happen to her."
What an a-hole!