I just spilled rum on half my Surface Pro 3 keyboard, so here were my steps:
1. swear at the wall
2. take another shot
3. rinsed the affected half under tap water
4. Use compressed air to blow the water out from between keys. Lots came out.
5. take another shoot
4. Put keyboard a few inches away from low-power (500 watt) heater fan for 20 minutes
8: tested it: all keys work fine no sticking!~
I've long suspected there's nothing in the keyaboard that would be damaged with a little rinsing. Glad for this opportunity to test it when I don't care much. Bolstered by knowing I can just buy another keyboard.