I'm a huge Zelda fan, and like Wind Waker, but I have to say it's not the best Zelda. Nor will you finish it in 3 days, though of course it all depends on how much exploring you want to do.
My complaint about the game is that your map is all ocean, divided into a grid. Each grid square has one island to explore which is imo a huge copout, as was N's decision to make the game cel-shaded rather than the polygons we were expecting. It's fun and playable, but somehow without the vast plains and other (land) areas of previous Zelda games, it missed the mark for me.
And yes, my dumb ass will be buying the Wii U version too.