I'd leave it in the kegger and take a small sample every other day to track how the flavors are changing. Vanilla dies off quickly in my experience.
Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"
"I would like to die on Mars, just not on impact." Elon Musk