<p>DO NOT WORRY. Recently at a Duke accepted student day, a visiting accepted student went to a party, drank too much, got alcohol poisoning, and ended up in the ER. Duke admissions officers told me that they did not do anything to the student–in fact, they got the Duke student hosts in trouble. If drinking on campus on an accepted student day doesn’t do you in, nothing will 
I think we can presume Stanford won’t care either.</p>