I have visited the Lake of the Ozarks numerous times since I was a kid and it's changed quite a bit. In my younger days, back in the 70's, it was more family oriented. These days it's more party oriented. It's known for "Party Cove" in which multiple boats pull into a cove and it's anything goes, fueled by excessive alcohol!
The population of Osage Beach has grown quite a bit since I was a kid and wealthy people are building multi-million dollar houses on the lake and own very expensive boats. The pool party location in the video (Back Water Jacks) is a popular hang out and they have boat slips for customers to park their boats and stay for lunch or dinner.
One day, while staying at a fishing cabin across from Back Water Jacks around 10 years ago, I watched a 58 foot Sea Ray pull up. That boat costs around $1,000,000! It looked more like a Yacht that belonged on the ocean!