"What to do if tea spills on MacBook Air keyboard: what should I do if the keyboard of my MacBook Air 13.6 get wet ? I turned it up side down and dried it with thin towel. It seems ok, but I want to do what ever I can to keep my Mac from being damaged. Please advise."
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Spilling Tea on a Mac:
If you have AppleCare+, then it is covered. Go here: AppleCare Products - Mac - Apple. To see if you have AppleCare+ coverage, login here: Check Your Service and Support Coverage - Apple Support
Recovering your Data:
Elsewise, it is a matter of cleaning it up, and restoring your data from a Time Machine Backup that you created.