The water temp should be about 110-115 degrees farenheit. But a good rule of thumb - if you can't hold your pinky finger in it for 10 seconds, it's too hot.
You a Mawrter? Hearted! I feel like I've found a bunch of us on Jez recently. (I mean, obviously I knew they were out there - but identifying them isn't always easy!)
I totally picture Michelle O and Dr. Biden being best buds. Kicking back with margaritas and eating cookie dough out of a tub talking about both the serious and the mundane.
This is an anomaly though. I have many relatives that are dance moms in Pittsburgh, and NONE of them take their kids to a stuido even remotely like this.
More power to you. As you get older, it gets harder and harder to avoid the crappy next day feelings. So, live it up! Drink for the rest of us old folks.