How much trouble am I in?

It's nothing. You're not driving it enough to cook the water out of the oil, and when it cools, condensate forms inside the motor.

I used to get short-term-ridden Harley's (AIR COOLED) that would get milkshakes in the trans and engines.
"I only ride a couple blocks to my buddie's house, drink a few beers and hang out for two hours, then ride home...."

Just warm enough to get some moisture (which is a byproduct of combustion in a gasoline motor) but not hot enough to cook it out the case vent.