Someone posted that they were able to use their counter svc credits at the Cantina de San Angel, and someone else said they used theirs at the Moroccan counter svc place.
I also remember someone saying they took MYW credits at Earl of Sandwich at DTD, but there was a $$ limit if $8.50 for each credit.
It sounds like more and more places are starting to honor the Dining plan, even if they aren't "officially" participating. I plan on asking everywhere I go- if they take the credits, great! If they don't, we will go somewhere else.