As a current student this is not entirely true. You can have drinks in the classroom they just have to have a lid. You are not supposed to eat in the lecture hall but you can eat in the hallway in between classes (every 50 minutes) and I have seen/heard my fair share of people eating while in class and I have yet to hear of people being caught while eating in the classroom (no one has stormed in during class to take food away from anyone). I think they may be more picky about eating in the small group/standardized patient rooms. There are cameras that take one picture in the morning and one picture in the afternoon for attendance purposes but Med ed does not sit in the office and watch the cameras while we are in class.