On my most recent trip.. I did not.
We were travelling as a group of four individuals on short notice and I didn't want to pay up front for the whole trip.
Since I had no intention of adding on the dining plan... I preferred having the better/more flexible cancellation policies that come from a room-only reservation. And I preferred the lower pre-payment amount.
I did a comparison and the price difference was negligible. I think we might have saved 28$ by booking a package vs. doing our tickets separately.
We bought our tickets at check-in and had them added to our room keys no problem.
Knox