When you finish a daily Piñata Party you are presented with a screen of Piñata's to smash. There are four rows of four. After you smash your allocated three Piñata's then if you haven't revealed the big prize pot of coins (or costume if you've not unlocked them all) then it's location is revealed. I have noticed that it's location is not random, instead it appears to be decided based on your choices.
I'm going to give some 'for instances' from memory, so I might not be 100% right, but it's definitely not random for me. For instance if I pick #1, #2 and #4 along the bottom row then the big coin pot will appear in position #3. If I pick #1, #2, #3 then the prize Piñata will be #4. That sort of thing.
So my question is, has anyone discovered a sequence of three Piñata's to smash that always includes the big coin pot?