Raglan Road or Teppen Edo are both wonderful. I've never been to Coral Reef but I've always wanted to go and it sounds like a great meal to do with kids. Have fun!
I agree with previous posters on many restaurants. Boma is great and it's nice to check out AKL. Biergartan is fun, good food, Teppan Edo is good, cool if you don't regularly visit habachi restaurants.
Since you only have 1 Epcot restaurant, I would recommend another Epcot restaurant. There are so many to choose from in world showcase, also the Garden Grill in the Land pavillion is fun with the characters & revolving restaurant.
Chef Mickey's is always fun but it's noisey fun!
Boma's we really like, but Tusker House is more convenient if you're touring AK & we think the experience is comparable (all you Boma lovers, I said comparable, not just as good )
I vote for Boma also! It is wonderful and has so many choices, both regular and different. My kids love it because you can go and look at the savannah after dinner.