Why should you even ask Apple to replace it? You won't buy a car and have someone put a dent in it and take it back to the dealer for a free fix/replacement.
Am I the only one who thinks this?
Since reading a number of posts on mac rumors, I've seen a lot of instances where I would never have guessed Apple would actually replace damaged products outside of production.
Others have too, and probably say they why not give it a shot. I'm assuming the "geniuses" take a look at the damage and take a look at your history with Apple and probably take a look at their current inventory and make a decision.
Customer service is worth a lot in today's world, and one reason people are willing to pay a premium. The fact that Apple is willing to do this is some instances says a lot about their customer service, and one reason why they have such a loyal base of consumers.
While I would not expect for my ipad to be replaced because of accidental damage, nor blame Apple if they refused to replace it, from what I have seen, I would definitely attempt to see if they would be willing to do so. I own quite a few Apple products. I have yet to return one because of any damage, intentional, accidental, or due to non-user defect, but because they make such excellent quality products and appear to have such good customer service, I will keep looking to buy from them.