1. Probably. It can last a long time if not dried out properly.
2. Could be a drop. I doubt it.
3. Yep, you will likely see more of the keyboard screw up.
4. The FAQ says the disassembly is optional, and it is. You don't need to do that.
The 3-5 days set aside in bag of rice or a heat-emitting device is not optional.
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