If one only shot at 10 cup goals and collected all 780 or so shots (850 max at end of event ) that would be 7,800 cups. Additionally there seem to be an unlimited number of quests that reward 5 shots. I think I'll complete 40 by the end. So that's another 200 shots and 2,000 cups.
So, at the end of the event- you want to beat 10,500 cups.
Personally, I'm at 21,000