7. Don't fly there. Get out of it as quickly as possible, if necessary by a 180 degree turn. Keep continuous ignition.
6. Braking distance is increased on a wet runway. V1 is the last point at which the take off can be aborted allowing the aircraft to remain on the runway. (Yes, I know there's lots of performance imprecision there, but let's keep this simple). So wet v1 is normally a lower speed than dry v1.