Spilled coffee on my macbook pro keyboard. Performed the recommended procedure of unplugging, taking battery out, and letting it dry out for 48 hours. Computer turned on and worked, but keyboard did not work correctly. The keys in the direct path of the spill did not work, even after popping them off and cleaning thoroughly. So I ordered a keyboard from ifixit, and hoped I'd be able to swap the old for the new on my own.
Repair went perfectly. It took about 30 minutes. (half of that time was spent unscrewing and screwing the screws.) I was nervous about opening up the chassis but the ifixit guide helped me through the entire process. I got a little lost once, but that was because I had skipped a step in the guide. The new (refurbished) keyboard works!
Replacing the keyboard on your macbook pro is completely do-able. Just make sure you have an uncluttered workspace, and a way to keep track of all the different screws. And don't rush. Take your time and you'll be done before you know it.