Look online and see if you can find instructions for how to lift up the keyboard (only do this after unplugging and removing the battery). You may be able to clean (with rubbing alcohol) the mineral deposits that are causing the problem. I dumped some in mine (filtered water) and was shocked at how much cleaning was required.
Most manufacturers won't cover water damage - unless you get some sort of policy that covers accidental damage.
I would let it dry naturally - and not use a hair dryer.
I won't every buy another Mac. They refused to cover something that was a known design defect under warranty. I've been happy with IBM/Lenovo, but will look at all options next time I need to purchase.
CA
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