I used the dark side of the force Sunday, aka Disney Premier.
I found all in park - Disneyland- merch gave 10% at register, while eateries were sadly a hit and miss. Granted you must clear $50 but that's an easy task while in park.
The card member perk was pretty awesome, 6 people per account holder, must show card and government ID. Free photos at meet and greet, I saw Kylo Ren. 
He called me a Jedi Sympathizer as I stood there with DBF who was wearing a "Team Chewbacca and Solo" shirt. It was a old kid's dream come true!
Great actors, very believable. The 501st would be impressed, all the way down to the voice was spot on.
Also hugged Chewy in his 7' goodness while tearing up but back to the CARD...
it works 100% on my visit in park at stores, 40% ish with food. Will check point accrual.
Now offers $100 statement credit instead of gift card.
edit: I'm referring to discount. 10-15% discount.