If I take my iPad to the Apple store, will they repair the speakers even if I don't have a receipt?

So about a year ago I blew the speakers on my iPad. The problem here is that I got this iPad from my dad, who was given the iPad by his boss for work, but gave it to me because he doesn't really have any need for it. The iPad was originally owned by his boss, so I don't have a recipt for it.

So I could either delete all my stuff from it and have my dad give it to IT, but he's told me they are very disorganized and I wouldn't get it bak for months. I use it a lot for school so that really isn't the best option. Or I could bring it to the Apple store and ask them to fix it. Will they accept it without a receipt? And, assuming there is a fee, how much will that cost?

I believe it is an iPad 3, in case that matters.

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