I don't actually own the WG-3, but have owned the WG-1 and now own the WG-2. Overall I'm pretty happy with them, although I must admit they don't take the greatest photos. But, you can drag them all over the place, including through the rain, mud, water and snow and they still fire. They are also kid-proof, which is a nice feature.
Like many electronics, the WG series is packed with such an overload of features that it would take a lifetime to figure them all out. Not that this really matters, but it does come into play when you set the camera to "Auto" mode as it cycles through all sorts of things (party? fireworks? action? snow?) before taking the shot, which makes for some very slow shutter time. This can be fixed with setting it to "manual."
The WG series seems to do well with medium focus photos with lots of color, but not so great with snow. However, the photos can be easily fixed/adjusted with a program like LightRoom.
Overall, I'd recommend this as a good adventure documenting camera, but not a great camera camera.