Ooh. You're going to get a lot of opinions here. I look forward to seeing what everyone else has to say.
Not knowing your tastes, your daughter's age, etc, I'll throw a few things out there - see if any of them are helpful.
How old is your daughter? Is she into character meals? We REALLY enjoyed our character meal at Garden Grill in The Land Pavilion in Future World - we had a lovely time with Chip and Dale and Mickey and Pluto, and we thought the food was surprisingly good for a character meal. We had dinner there (the only option at the time, though it's now open for breakfast as well - and maybe lunch? That I'm not sure of). The food was fresh and tasty. The slow rotation of the restaurant added a little something extra, as you pass by parts of the scenery for the Living with the Land ride - my son (5 1/2 on our last trip) was absolutely tickled by that. Overall, a good experience. It's on our to-do list for our upcoming trip, the only problem for us is deciding between breakfast and dinner there.
I know that not everyone likes it/thinks it's worth the price, but my little family of 3 really enjoys Le Cellier, in Canada. It may not be the absolute best food you'll have in the world (or even in the World), but we've always had stellar service, good-to-great food, and the cool, dark "cellar" that is the restaurant's setting makes a really nice break from the Florida sun. We've enjoyed both lunch and dinner here.
Chefs de France, we've found to be really good. We've had lunch there a number of times over the years. Reasonably priced, for Disney, and the food has always been really enjoyable. Waiters have been very good as well. I'd eat there again. (And again and again!)
San Angel Inn seems to get mixed reviews, but that's another that we're fans of. Again, it's cool and dark inside, which is refreshing on a hot Florida day. The theming is awesome (the restaurant is in perpetual night, placed between a river and a colorful Mexican market). The food is quite good - though it is a more traditional Mexican menu - not Tex-Mex (which I think might be the source of some people's negative reviews). We've had good service there. The tables are a bit too close together for my preference, but once you're seated, it's not that big a deal - you won't *quite* rub elbows with the people at the next table over.
Overall, I'd say this one is a winner - again, as long as you don't go in expecting crunchy taco shells and gorditas.
Restaurant Marrakesh has been a bit of a mixed bag for us. On one visit (2011, maybe?), it was among the best meals of our trip. Terrific food, a high level of service, and the added fun of the belly dancer, who got some kids - and some intrepid grownups - to join in on the dancing. On a later visit, we were let down - it was just mediocre at that point. If you like Moroccan food, or want to try something new, it might be worth giving a shot - but I'm not sure I can enthusiastically recommend it. We just might try Spice Road Table to get our fix of the same flavors - I've heard good things, but haven't tried it myself.
Are you going during the Food & Wine Festival? If so, you might not want to make 3 table service reservations - you can easily (happily!) eat your way around World Showcase, trying small plates from the various booths. We've done that before. Yum!
And I'll add - I'd personally avoid Coral Reef. I'm sure someone will recommend it - to each his/her own! - but I wouldn't. Full disclosure, I'm not a seafood person. Neither is my son. When we went, the whole place smelled fishy, which isn't my cup of tea. The whole place felt... dank. Humid and a bit musty under the fish smell. That was a turn-off for me, too, and that smell bothered my husband and son, as well. At the time, there were I think two things on the menu that weren't fishy, so it was pretty limiting - again, because of my preferences. We weren't seated particularly close to the aquarium wall, so while it was cool to see it off to our side, it wasn't really up close and personal. My husband said his food (a seafood dish) was decent. My son ate something off the kids menu and was fine. My dish was pretty bad - I've had better quality food at Wendy's.
Anyway - there's plenty of good food at EPCOT, so this is a fun decision to make. Hope I've helped!
