If you're really interested in getting a first look on this old game, this is the easiest way to go.
I started by playing multiplayer with my brother. Me with the wii-mote and he with one of our 'old' GC-controllers. Took a couple of tries before I had mastered the tecniques needed to beat Donkey Kong, and racing against my brother in terms of points made it all a bit more fun. Still, there wouldn't really be much of a difference from playing the Single Player one time each. A bit uninspired.
The graphics were nothing special, but I didn't expect anything either so I'm not disappointed in them at all. I like the music themes though, and even if it is boring playing for oneself for a longer time I really enjoy playing this against other people.
I know that if I had been there when it was new, it would have been really great, but now, I can't really give it a high score. There are a lot of better games for the wii. I'd say Monopoly is more fun. Get that instead.