Coral Reef - Have not been, but from what I gather, people either love it or hate it! My personal opinion is that there are too many interesting places to eat in the World Showcase to bother with a mediocre seafood restaurant. Plus I find the idea of eating fish while all of the fish are swimming around me kind of creepy.
'Ohana - Again, have not been, but I heard it is a lot of fun and the food is good. It's also a treat to get to visit the Poly!
50's Prime Time Cafe - We booked this for the atmosphere, which I felt totally lived up to the expectations, plus we were pleasantly surprised by the quality of food! My dad is a very tough critic, and he LOVED the pot roast. I loved the fried chicken! It was one of our favorite dinners last time and we are going back. Definitely the best table service at DHS!
Rose and Crown - Another pleasant surprise! We loved the atmosphere. Really relaxing and friendly! A great place to unwind after a long day at the park. We all the food was great, and we timed our reservation so that we could watch Illuminations on the patio after. They have seating outside for all of the inside diners.
Chef Mickey - Personally I was disappointed with the quality of food here, and I found it way too crowded and loud. We are not going back there next time, and instead opted to do Donald's Breakfast Safari at Tusker House.
Olivia's - Haven't been, but I tend to agree with PP that I would only go there if I were staying at Old Key West, especially if you don't have a car. If seems like one of the harder places to get to by Disney transportation.
Yak & Yeti - Haven't been but would like to try.
Hollywood & Vine - If 50's Prime Time is the best TS at DHS, Hollywood & Vine is by far the worst! This is the worst buffet on property. The food is poor, the service is bad and the restaurant is a mess. Please don't go there!
Tutto Italia - Haven't been, but people seem to either love it think it is way overrated. I have heard it is expensive if paying OOP.
1900 Park Fare - We did dinner here, and it is a great character meal if you are a Cinderella fan. The food is not the best, but not the worst either, by far. I've heard that the breakfast buffet with Mary Poppins and Alice has better food. Either way, I think it is worth it, just so you can go visit the gorgeous Grand Floridian!
Have fun planning and have a great trip!!!
