It depends, the only ayahuasca ceremonies that I have done are from Santo Daime. The guy who gives it to us gets it shipped from Brazil and lived with the church for two years. He does it somewhat different. It's never been unenjoyable. Apparently one time everyone was forced to sit on these chairs and couldn't get off. That would've blown. But I have never experienced him doing that to us.
I wouldn't feel comfortable doing a traditional ceremony either, but that is the best I've got because it is hard to find these things on the internet, I've found. Word of mouth got me this far..