I have the card that I got from my surgeon, but I never have to use it. I just tell the restaurant I need to order from the child's menu and they are ok with it.
We eat out a lot due to business entertaining etc., and i have found that many restaurants have really good healthy choices these days on the kids menu. Macaroni Grill, Outback Steakhouse, and several others offer steak, grilled chicken and fish, etc.
I live on the gulf coast where seafood is plentiful and many of the nice seafood restaurants offer grilled shrimp and fish which i love!
I'm pretty lucky that my husband and I eat almost identical foods and so we share a lot of the time. That works out very well for us.
My biggest complaint- almost no one offeres sugar free deserts!!