I would have more concerns about this than just going to the club on my own. IF you have a long time relationship with someone local and can ask them to keep an eye on the kids, that's one thing. Asking people if you can pay them to keep an eye on your kids could attract some unwanted attention. If you are feeling this way, I'd say skip the club all together. There is live and dj music every night of the week on the beach from 10-2. The only thing the jungle has going for it is that there is a cover fee, so the guys who can't, don't, or won't pay to get in are all at the free venues like Bourbon Beach. in my 28 nights in negril, I've been to the jungle 2 times. Not something I have to do every visit! Concerns about going to Roots, Alfred's, and Bourbon Beach are simply getting a car home, which is easy enough. 18 year olds can be two kinds of kids... kids who just want to hang out and have fun, or kids who want to get smashed because they can drink alcohol in public... you know the kids. If they need supervision, perhaps they shouldn't go out alone. If they are young and pretty, they will get attention from a lot of bystanders, at all hours of the day and night.