Remember, many of us you'll be seeing there are just "different."
Make allowances.
Extroverts are energized by people, and wilt or fade when alone. They often seem bored by themselves, in both senses of the expression. Leave an extrovert alone for two minutes and he will reach for his cell phone. In contrast, after an hour or two of being socially "on," we introverts need to turn off and recharge. My own formula is roughly two hours alone for every hour of socializing. This isn't antisocial. It isn't a sign of depression. It does not call for medication. For introverts, to be alone with our thoughts is as restorative as sleeping, as nourishing as eating. Our motto: "I'm okay, you're okay—in small doses."
For some introverts, we might choose some time alone with our thoughts over food. Or sleep.
How many people are introverts? I performed exhaustive research on this question, in the form of a quick Google search. The answer: About 25 percent. Or: Just under half. Or—my favorite—"a minority in the regular population but a majority in the gifted population."
But we're not stupid.
(many actors, I've read, are introverts, and many introverts, when socializing, feel like actors),
That's me. I'm okay socially if I have a "role" to play, but I can't get started without that booster.