HERE. I think I was most impressed with the details our master instructor took to teach us modifications for all participants. Most group X style classes, just teach you the exercises and turn you loose.
I have to say meeting one of my favorite female athletes of all time was a huge perk for me too. Gabby was an Olympian when I was in college, and the world typically stands still for the Olympics, it's even on my bucket list to attend them. During the lunch break, most everyone headed out but I had packed my lunch so I got to chat with Gabby for a while. I told her I home schooled and she said she respected and admired that, her girls are home schooled, but by a private tutor. As she was leaving she came over and hugged me and said Mama, I know you have the patience of Job, keep it up. AND THAT was the highlight of my entire experience.