Cutting up a goat on an alter would have freaked me out less than a charismatic church I attended at the request of a friend. I may be wrong on the name. Rolling around on the floor, glossolalia (speaking gibberish) and other extremely hysterical behavior. I was with an atheist, and we were very much not sure what the hell to do. We thankfully had been sitting in a back corner. We got out, but we were both concerned if they knew our belief structures, we'd be ripped limb from limb.
Nothing against the religion, and strictly speaking about ANY crowd in such a heightened frenzy. I'm sure they're peaceful, decent people. But it was one of the most disturbing things I've seen in my life. Even moreso than digging up mass graves. They seemed absolutely normal, and then acted completely insane in the span of less than five minutes.
They have an absolute right to their belief system, but ever since then, I've wanted to own a SAW more than anything in this world.
I stuck through the most heavily charismatic service (all 2+ hours) I ever attended because of the promise of good eats afterwards. Well worth it, both for the chow and for the in-service entertainment (all the sort of things you described
and more!). I also felt obliged to stick around after dark due to the skeevy neighborhood and cluelessness of my fellow visiting congregants.
Charismatics can be both enthusiastic and persistent, but I have never gotten a whiff of danger off them. I suspect that is something you brought in on your own part. Odd and silly to an outsider? Sure. Dangerous? Not so much, might want to broaden some horizons. Lots of enthusiasts crossing the line from sober to silly in many areas.
Tony Robbins sez, "Unleash the power within!"
Need I mention all the near-psychotic goofy foolishness that pervades us.mil, or at least the small corner of it I occupied for a while?
FTR, I am not a big fan of numbers of folk in confined spaces. Almost entirely a function of folk/sqft, not absolute number.