I did have trouble getting my dining card at POR. We were there 10/17 to 10/23. When I called to modify my ressie to the AP rate, I was told since my reservation fell on the dates and was staying the required number of nights, I would get my $50 dining card at check-in. I did have to move to POR from POFQ, and that was okay. No splitting the ressie or anything. I asked again point blank, "So, the $50 will be there when I get there, right?" And I was told yes.
Well, we check in late on 10/17 and front desk person knows nothing about it. Go to conceirge desk next day at his suggestion and they don't know anything about it, say I have to call Disney Reservations. Call CRO and the first CM I talk to, very nice, puts me on hold to find out about it and comes back and says I'm not eligible since I didn't check in on the 21st. Ask for a supervisor. Wait some more. I explain to her that I asked the CM who modified my ressie straight out that I would get the $50 dining card and I maybe wouldn't have moved resorts since the additional room discount wasn't that much more than my
AAA room rate. Finally, she called the front desk at POR and had them split me into two reservations so I had to go down on Sunday 10/21 and check out and check back in and also put another room deposit down that showed up now as a credit against anything I charged. I did get the card but it took almost two hours of my vacation time and four people before this was resolved. Unfortunately, I left the piece of paper of who I talked to when I modified my ressie at home.
That's the danger in knowing more than some of the CMs who make reservations since the turnover is high, I should have kept asking are you sure we don't have to split this into two reservations now?
I'm not sure what to suggest you do after you get home. The supervisor told me once you check in they lose control of the reservation. But that's where I'd start, call the regular number and ask for a supervisor, at least they'll be able to give you a next step. Good luck!