Am I being crazy? He's not texting back

So I've been quite close with this guy, we've been talking every day for about 2 weeks now. Then he goes on a trip with his friends and they're going to a festival.

Yesterday he messaged me saying, "We have no service at the camp so probably can't talk tonight" so I said that's okay and for him to enjoy his time.

Later that night he messaged me because he got some internet connection so we talked for a bit before him going back to the camp. The next morning he messaged me several times, and then disappeared again for 6 hours. I get that he's with his friends and at a festival, am I being crazy that he doesn't reply to me when I can see that he's online?

Should I wait and see when he gets home?