Board Thread:Plants vs. Zombies 2: It's About Time/@comment-12391511-20131105085658

So apparently if you have multiple devices, you can do up to an unlimited amount of pinata parties everyday based on how many devices you have, so long as you do them within a certain amount of time. And the best part is is that you can reap the rewards from every pinata party. As long as you do them before your account registers that you've finished a pinata party, you can still play pinata party on a different device.

I did 3 separate pinata parties on my Ipad, my Iphone 5c, and my Iphone 4 which all got me different rewards. After killing and restarting the app, I found out that I has benefited from all the rewards from the 3 different devices.

This had always worked with killing the Zombie Yeti as well. 