I think 10 might be a bit excessive. Last summer I spilled an entire glass of water all over a MacBook, and the screen was filled with water. I had it in rice for 4 days, and it was 100% clear of any water when I took it out.
Not true at all, I tried turning mine on at least 5 times as short as 4 hrs after it went in, and it was dead, wouldn't respond, wouldn't turn on, wasn't recognized by the computer. Or anything, then I left it for another couple days in rice along with a blow dryer and went I went to turn it on after that everything was golden