We did it the first time about 5 years ago and now when we do the crawl very visit and we usually have a bunch of our friends do it with us.It's once a year we get to vacation in Negril and we want to get out and see everything and we never had a bad experience.We say try it,you can always opt to take a taxi back to your hotel from any place you stop.
PS:One time we had 50 people on da bus dat only hold tirty tree people,had a blast!