We had two fantastic meals on our last trip! My hubby and I both turned 50 and celebrated our 26th anniversary in the span of two months so we flew to Disney without the kids!
First was birthday dinner at California Grill, they had confetti on our table. The seafood ramen was perfect and I can't put into words how good the smores creme brulee with the chocolate birthday card was!! Wishes from the viewing balcony is truly special!!
Second was anniversary dinner at Citricos. Cocktails, cheese plate, steak, chocolate gelato, all absolutely wonderful!
We were in WDW last December, and while we didn't go to Citricos, our meal at Cali Grill was probably the best we've had. We had a largish party seated just off the windows overlooking Cinderella's castle...even without being right at the windows, the view was magical. The food was amazing. I had the seafood ramen (as did a few in our party) while others had the steak with duck fat sauce (that was so good everyone wanted to lick the plates clean). Some of us shared the smores creme brûlée which was so incredible that we were literally speechless (outside of one nephew's four letter word when he took a bite). Between the food, wine, and view (and the view from the terrace, where we watched the Christmas party fireworks about 30 minutes after our meal), it was a night that is at the top of our WDW experiences. Honestly, the service during the meal was adequate (not the 'above and beyond' that we expect from signature dining). But everything else was so good that it made up for the harried service.
A meal a few years ago at Artist Point was memorable because of the service. The food was great, the atmosphere relaxing and enjoyable, but the wait staff was what made the evening memorable (complimentary champagne at the end of our meal...which included a whole lot of appetizers instead of entrees...and extra, complimentary servings of cobbler to go around as they assured us we really would want more than a few bites once we'd had a mouthful).
Aside from our two favorite signatures:
Crystal Palace at lunch, because the characters were so incredible with our tableful of 6 ft plus 20 to 30 something year old males (the food was good too).
'Ohana, because service was friendly and great, food was good, and I'll never forget the look on my kids' faces when they saw Stitch and Pluto (their favorites, even more than Mickey).
Yak and Yeti, just because we were so unprepared for how good the food would be all around.
San Angel Inn, because we love the atmosphere AND had an incredible (if tight...aka, you are right next to your neighbors) meal here.
Trader Sam's, on a December late afternoon the week after Thanksgiving. The waitstaff was having a ball...and the bar was maybe half full. Our bartender admitted that he was disappointed in the crowds, given that he makes more money when it's extra busy, as in Thanksgiving. But it was much more fun watching the antics without a crowd of people. Drinks were really good. We tipped very well to help make up for the slower, post- Tday crowd.
Lots of other places come close to being at the top of this list...Via Napoli, Captain's Grille at BC, Boatwright's at POC, Raglan Road, and room service at any deluxe when you're feeling lazy. But the above are our standout favorites (so far).
And our server was a treasure - warm, engaging, and wonderful with the kids. A memory full of pixie dust for our family. 
