This question is prompted by the incident on Cyprus with Israeli youths. Google and you'll find it.
I could not afford to go on holidays with friends without parents until I was working in my early 20s. Now it seems people can afford to go at younger and younger ages.
I was sexually assaulted as a teenager at a campsite in France, on vacation with parents. I only told them 9 months later when it looked like we would return to the same place.
I think they need much better policing in these resorts, with CCTV, active policing, etc. Things have changed for the worse, and authorities need to keep up!