the athletes are not forced into doing these immoral things. they let themselves run lose just because they are far from home. that doesn't mean everyone will do it.

their behavior will depend on the values and cultures of the individual athletes themselves. this is one event for them to show not just their prowess in their respective sports, but also how well they've been brought up in their own countries. if you believe your athletes were properly raised in your country's values and can remain to be the good people that they are anywhere they maybe, then there's no reason to worry.