I have to agree with you, Searchfortruth. I was in college in the '80s, okay I am a bit old, but there were only one or two people who got carried away and explicit in public at frat parties for example. Back then it was still pretty embarrassing for a girl who got drunk enough and went too far in public at a party. I never saw it first hand but remember it happened here or there and I felt bad for the girls when it happened (i.e. to sorority sisters or other girls I knew, or any girl.)
But for many girls with no financial means, in areas where a large "male entertainment" industry exists, many young women will simply do stripping or even tamer lingerie modeling, erotic modeling, etc (often fully clothed, just suggestive poses), as a means of employment. Sometimes it's to make money for school, or sometimes it's to support themselves. It's always been around but now it's
much more mainstream and public than it was in my time.
Of course the Florida universities are very well known as the #1 party schools in the U.S., there is very much a partying scene in Florida among a large number of young people. The Florida climate also makes lots of street parties and stuff possible, wherever there are clubs, the streets are full of young people cruising from one club to the next. These areas are full of strip bars, restaurants, and tattoo places, and a whole lot of young people go to all of them. In Orlando, you have the added influence of the tourism. It's literally one of the playgrounds of the world.
When I see the party photos I have to admit I'm not that shocked, having lived in Tampa, and because these young people were just born in the '80s, they actually grew up in the 90's with "reality" TV and everything else going on, totally open sexuality to a degree we didn't even consider, practically sex in public, going on right on TV, you know? It's a different world for this generation. Not all young people but a lot of them, I think especially in some geographical regions. Casey's crowd were right at the age for this kind of thing, I imagine most of them will outgrow it

Not only the sexuality but the drug use seems to be a bit more reckless than in our time. Guys and girls just knocking themselves out at parties doing inhalants, etc, kind of the rave kind of culture, as in the pictures from the Mike L guy's entertainment venue, what was it called, 16 Acres?