Right on. I'm at 25 stars now. That's 1/3 of the way there. 
I'm quite tired at this point. 

I'm sure that all 6 Mario games could be beaten within 24 hours. I'm not sure I'm going to do it though. It's been so long since I played Mario Sunshine, I'm not sure if I even remember where anything is. 

I guess we'll find out. 

First things first... 50 more stars on Mario 64,