Hi Meghan!
Le Cellier is a wonderful restaurant! It's also extremely popular, so if you'd like to visit, ensure that you make Advanced Dining Reservations up to 90 days before your arrival by calling (407) 939-3463. Le Cellier is a steakhouse that features wonderfully prepared beef, fish and chicken options. The restaurant is famous for it's cheese soup, and has great desserts too (especially the chocolate "moose"!. You can see the menus for lunch and dinner and get a sneak peak of the restaurant by clicking
HERE to be directed to the its web page.
As for whether it's a good place for kids, mine love it. It's cool and quiet, and a great break for a mid-day lunch or dinner. They love the kids' menu. Regarding "dress code", whatever you wear to the parks is absolutely fine for Le Cellier. Shorts, t-shirts, flip-flops and Mickey hats are all perfectly fine!
Le Cellier is one of our Epcot favorites. I hope you have the chance to visit!
Tanya