That depends on what you'd like to have happen, really! The consequences could range anywhere from a stern admonition of "HEY! GET AWAY FROM THERE!", to being actually dragged back downstairs by one of the displeased Pokemon on duty charged with keeping people away from there; you could hypothetically get shooed into the kitchen and put on dishwashing detail as a punishment, or sentenced to sleep outside rather than in one of the indoor areas. Or, if you're really gunning for a severe punishment, Clair could blow her stack and do something like convincing the gym leaders to temp-ban the person from challenging a gym for the next few weeks afterward.

Basically, if you want there to be consequences, we can get creative and work with you! All it takes is some idea of what you'd like to happen.