Meeting the fam

So my boyfriend and I live in different states while it's not a long way it's a little over three hours away so we have not done the meeting of the parents thing yet. Well I'm invited to do Thanksgiving the weekend before with his family and extend family. I'm really nervous because we grew up two different ways but I can see us having a future together so I want to meet his family I'm just hella nervous about it because I have never done something like this.