I'm sorry... this won't answer your question - but i thought I'd throw it out there as an "FYI."
I called about a week ago to redeem 60 "rewards dollars."
In the past, when checking into the resort, I'd place any Disney Dollars I may had accumulated on my account - in anticipation of using them with my room charge.
The rep at the VISA line said I wouldn't be able to do that - that, "...at WDW - they were accepted by participating merchants," - and that I couldn't just "put them on my account" as a blanket credit. And while she assured me that they would be widely accepted on property - they do NOT maintain a list of participating merchants - as it would be too difficult to keep the list current.
So I asked if I could redeem them for the
Disney Store, instead, and then purchase Disney Dollars - and she said "No - you can't purchase Disney Dollars with your Rewards Dollars." I didn't ask about park tickets, though - sorry.
I went ahead and redeemed mine for WDW. I could have paid a fee to have them overnighted - but she indicated I would receive them in about a week, anyway.
We're going over for Memorial Day Weekend - I expect to have them by then. If no one else has reported back with their personal experiences by then - I'll be sure to!
HTH.