From my experience, yes partyhats do spawn in the same locations as yo-yo's. So don't worry, just keep running this badboy and you'll get a phat! My avg time for getting a phat was around 10 hours or running the script, So it takes time.
I don't know what happened then... gui popped up and i selected lobster, and then the client froze ( the game kept on being displayed, but I couldn't click on anything on the client or anything in the game)... i'm on osbot version 1.7.17. Sorry for jumping to a false conclusion
Guys whatever you do, please don't be idiots and crash the price of partyhats! This community will possess most of the partyhats, and so long as we stick together, we control the price. So please don't lowball prices just to quickly sell.
I think he put 75 because i believe that's when you never fail there but yeah I believe xp rates are pretty close if you don't mind a couple trips to the bank for food( or just use the pineapple that spawns)