Spilled water on my MacBook Pro

Several hours ago I spilled a few ounces of water on my MacBook Pro - on the keyboard and on the hinge. I took the standard recommended steps - turned it off, turned it over and tried to drain it, let it sit flat on paper towels for an hour or so. I then took it to the Apple Store where a Genius removed the back of the machine, found some water near the battery and got rid of it. And that was all he would do for me - he said it would cost me $1,200 for them to do anything more than that. He recommended I let it sit and dry for at least a couple of days and then see if it powers up and works.

From all I have read, and given the fact that there was water near the battery, it seems to me there is a good chance I am going to have problems, if not now then down the line. A reputable computer repair shop near me (4.5 stars on Yelp; lots of good reviews) will open up the machine right now and clean out any moisture for $200.

I think this could be money well spent. Sure - I could power it up in a few days and it could work fine, but problems usually arise down the line as corrosion sets in. Seems to me like a good idea to suck up the $200 and possibly salvage the computer now rather than sit idly by while the moisture causes damage.

Does anyone disagree with that line of thinking? Any other thoughts?

Thanks.