About to meet my older boyfriend for the first time

Hi guys. I'm f18, and I've been in a relationship with an older guy (30) for three months now. We are long distance, because he lives in another country. We haven't meet irl yet, but we are going to. In a month or two.

The thing is - my mom..she would absolutely kill me if she'd find out I'm dating a 30 year old man and that Im about to meet him irl. So, she has no idea i'm going to see him.

During his stay, we will be in another city, about a three-hour drive from my city. In separate accommodations. I'm going with a few of my friends to feel a little safer (I told my mom that I was going on a few-day trip with my friends). Despite this, I'm still nervous. It's not that I don't trust him or anything. I'm just..a little scared despite all.

Any tips? :')