I'm not 100% sure what you're asking. We have not used an EMH once in eight trips, we always avoid that park on that day. Did you have park plans before you made the ADRs, or did you take the ADRs you could get for the restaurants you wanted and then find out they were in EMH parks? I have always been able to plan far enough ahead to know what park we were going to be in before making ADRs, but I know that can't always happen.
If your family is set on certain restaurants, and the only days you can get them are EMH days, go with it, just be prepared; arrive before opening in the morning, etc. Will you have park hoppes? If you really didn't want to use EMH, I think you would have to decide if that particular restaurant is worth it. For me, it wouldn't be, and we would just chose another restaurant, but that's just what works for us.