Teenagers from other countries don't seem to behave in such a depraved way.
Are you kidding? To start with, this girl wasn't a teenager, she's in her 20s. Lots of drunken parties with lots of sex, go on all over the world. US college parties can get very sordid.
I would agree that there is more of a drinking problem in this country, but "growing up in an oversexualised environment"? that's the same in MANY countries in the world.
I don't think its fair to have sex in front of the general public, group or otherwise
Then don't go on holiday to Magaluf and hang out in the club where this type of behaviour happens. It's a very self-selecting portion of the general public. It's unlikely you would be in there having a quiet drink with your husband/wife! I would agree that sex in a public place, is not generally appropriate but this could easily be avoided if someone just happened to be passing on their evening stroll.
she is someone's daughter and you can't tell me her parents won't be moritified at her actions
She is a grown adult. Her parent's opinion is irrelevant.
she was deliberately misled
That would suggest that if she hadn't been misled and been given a holiday for her performance, you would feel any different about it. I don't think you would.
I think it can be classed as rape, there is no way she is in a fit state to consent
You have clearly not watched the video. She was more than able to consent and more than willing to perform.
I agree with SGB. Just because this doesn't sit comfortably with many of you (I certainly wouldn't do it), it is entirely up to her to choose how she behaves. There is no reason for her to lose her job. Her behaviour doesn't reflect the typical behaviour of a teenager. She has every right to do that if she and the other participants wanted to. She may well see it as a fun adventure and look back on it as a bit of a laugh.