As for the remapping of buttons and use of the touchscreen, on the whole it works rather well. There are a couple of odd combinations which require you to press a shoulder button while moving the circle pad and using the touchscreen… a notoriously difficult task for us lefties if the shoulder button in question is the left one (and it is). Even so, it's nothing you can't get used to.
In the end though, here's the real takeaway message – this is The Legend of Zelda: The Ocarina of Time, if for some reason you haven't played it yet, buy a copy. Buy it for the 3DS, buy it for your Wii, buy it on whatever system you want to sit in front of for hours on end, because once you start playing, you're going to want to sit in front of it for hours on end. There are side quests and the main quest, a good Zelda story, great music, and huge amount of fun to be had.
The Legend of Zelda: The Ocarina of Time is rated E (Everyone) by the ESRB for Violence. This game can also be found on: GameCube, Wii, and N64.