I just ate there on May 23rd. I wore nice khaki capris and a brown wrap top with a nice necklace. I had posted a couple threads about dress code before my trip (as I've never dined at Disney before), and people just sent me back the basic guide you posted...which was not all that helpful, but hey, people tried.
I was glad I wore what I did and nothing less. A skirt would be fine, too, but after eating at Yachtsman to a very casually-dressed group, I wanted to dress down from a skirt to capris. Sorry if this way TMI.
I had duck for my appetizer, the buffalo for my entree, and the berry cobbler for my dessert. All were delicious.

I was weary about the salmon since I had read some reviews saying that it was bland. My boyfriend's dad had it and enjoyed it, so I would not hesitate to try that.
Our server, on the other hand, was something else. His name was Andres, and although helpful at first, we waited a
very long time between dinner and dessert. Once our dinner plates were removed and dessert was ordered, we waited over 20 minutes for our tea to come, and then another 20 for the desserts. The whole restaurant could not have been ordering dessert all at once!! However, that is forgiveable. My boyfriend's parents both ordered the wine pairings (3 pairings total), and the final pairing for dessert was forgotten.

Andres might've had a bit too much going on that night.
All in all, it was a delicious meal and I had a nice time. Bring a sweater!
Have a good time!