The Wilderness is amazing! The ONLY thing I didn't like is it is SO big. My son got distracted one time as we were heading back to our room and he got lost. The hotel responded quickly though and my son was smart enough to go up to a security guard when he knew he was lost. They brought him right up to our room and checked back with us later to make sure everyone was ok. He had just turned 9 but still one of the scariest days of my life!!
Anyway, restaurants!
Moose Jaw Pizza and Brewing Co is one of our favorites. It is kid friendly and have a lot more options than just pizza.
Buffalo Phil's Pizza and Grill. Another kid friendly place that has tables where your food is delivered via an electric train. Their burgers are really good here. It is also attached to an indoor amusement center with rides and play areas.
Paul Bunyan's cook Shanty has a great breakfast that is served family style. The adults cost is a little pricey but they kids pay by their age I believe..so if you have a 3 yr old, he is $3.00. They are only open during the season, but it looks like they opened last year on March 15th, so that would be perfect timing for you guys.
It's been awhile since I have eaten at House of Embers, but it was pretty good when we did eat there.
If you are looking for an adult only place...The Fields at the Wilderness is a great steakhouse but VERY expensive (well, at least by my standards it is). My husband and I ate there for our anniversary one year and spent well over $100 on just the two of us.
The restaurant at the Wilderness also had a great breakfast buffet and kids eat free there too.
You'll have to come back in the summer sometime. That's when the Dells are a lot more fun. The boat rides themselves are incredible with the sights and the history of the area.