For all those with sore ankles it's probably because your chair is too low. You're thigh should be parallel to the ground when you have the kick pedal depressed. You can pick up a cheap adjustable drum throne at Guitar Center for under $30. I think that's what I'm going to end up doing.
obviously a fellow drummer or well informed musician
The above tip derives from actually playing a kit. Basic "suggestion" is to have your thigh parallel or perhaps a slight degree ABOVE parallel to the floor. Do not stomp on the pedal. You can actually get away with leaving a bit of weight on it and keeping it slightly depressed. You will have to develop a feel for it to play that way though.
Further, as some have mentioned the drums being "loud", as in the actual striking there of....Yes you can obviously hear the sticks hitting the pads. But I have to say the pads are QUITE sensitive and have a fair range to the outer edge. Play RELAXED without a death grip and no need to pound on the things.
You will save yourself from some painful experiences...seriously. Buying an actual pair of well made "balanced" sticks might be a benefit for this GAME. Some people may find that a lighter/heavier/larger diameter, etc., stick feels better in their particular hand. Last palyng tip" Try playing with using your fingers/wrists. Don't move your entire arm up and down. Check out a music video here and there. No you do not NEED to play like an actual drummer, but I do see many people developing real pain
quickly from "improper" technique.
Finally, I would have to say their claim that you be able to "play" a kit after "mastering" the game is fairly accurate. You WILL develop a good sense of rhythm/timing. But it would be an adjustment to play actual hardware. But you WILL have a firm foundation from where to begin.