1. Like I'd go to a party in the first place, 2. you could get food else where, 3. chances are their's an extrovert in the lecture who'd notice and help me so I'd be fine
Introverts are capable of going out, talking to strangers, and do the same things "normal" people do. We just prefer not to most of the time, keep to ourselves and our thoughts and enjoy quiet a little more.
According to the first 2 shots, they shouldn't even be able to make it inside the lecture hall.