u/PorkChopExpress67

So my park is maxed size and I have all the research stuff unlocked. I am working on the museum tasks and I keep getting the "Clean 20 guests with water gun" and my issue is I'm only getting like two or three smelly guests a shift. I was wondering if anyone knows a way to get more per shift or is it random? Earlier in the game it felt like I'd get five or six a shift.