We tired it for the first time in December and enjoyed our meal. The food isn't fancy but if you like meat and potatoes it's good. We especially like the cheesy potatoes. DH and I don't like fish so it was no problem for them to leave it off the platter.
I'd suggest telling them when you make the ADR about the fish allergy. And of course when you check in and to your server about your allergy. I've read so many things about Disney I don't recall if they do or do not have a special number to call about dietary needs. If your alergy is such you may want to check to see if they have one.
Karen