The WC sits on a balcony above the major walkway and is a great place to sit and eat outside to watch the crowds (without them watching you eat), see the sites and relax. It is a cozy and nice place like people said without being stuffy. If you have kids, its also a good place to see the parades. With good food and good prices.
Like others said its very kid friendly, VR is the one that is less kid friendly, that one is upstairs.
BTW- If the weather is bad you can also sit inside.