How similar is it to the golfing on Wii Sports?
Oh man, it makes Wii Sports look like a joke.
It's SO MUCH BETTER! It really takes into account wind, your strengths/weaknesses, you can take practice swings, you can play the entire tour. There are some "Challenge Games" in it too (see if you can drive the ball through some rings...taking wind, power, and club into account).
Wii Sports Golf is just a "demo" for what the Wiimote can do...Tiger Woods '08 is the real deal.