Yeah, definitely something I need to consider. At the minimum this event was just me benchmarking how well I can keep up in a live environment. Turns out it's actually much easier than I expected when you don't have to worry about camera control, and in a tricast/panel environment bouncing off multiple people is a lot more relaxing than just a duo cast. In the future I'll probably feel more comfortable bringing some more persona into it.
The official 'shifts' were ~8-10 hours, mine being on EU time. After that you were free to do whatever, but I didn't really want to leave since hanging out with all those people on the fun stream was far more enjoyable than sitting around in my hotel doing nothing. I'd say I spent ~18 hours each day at the studio and casted for about ~6-9 of those.
Ya did good. I think as you cast more you'll find out which parts of your personality people react to most, and you can lean into those more if you're comfortable with letting those grow. I'd take that approach over trying to actively "force" a kind of personality that, while fun or interesting, feels like an act you have to put on.