How to act at a High School banquet date?

So this is probably my first date ever. I like my date and she might have a thing for me too. So first, the bus leaves from the school to the venue (which might take an hour or an hour and a half). Then, when we get to the venue, we're pretty much just eating. And after that, I think they give you some free time just to walk around with your date or friends. What should I do? I know I should just be myself and try to make her happy, but I don't want to have any awkward silences.