Confused.

I've been dating this guy for a few months. He said I love you last week. In august he asked me if I'd go to this wedding with him. I said I would. He's a groomsmen. Anyway the wedding is tomorrow, he's brought it up a few times. He's there already with the guys it's about 45 minutes from us. The only problem is he hasn't told me any details, location, time nothing like that. He brought it up again on Tuesday but was like are you okay with the fact that you'd have to be alone for part of it. I'm confused as to why he hasnt told me any details. He's not usually like that. I met the couple last weekend (his best friend) and they didn't seem to like me all that much. So I'm wondering if he really doesn't want me there? I don't wanna bother him about it since he's away and drinking with his friends. I'm just not sure if I should plan on not going. Bigger issue is that I work nights and I'm working tonight. So if I don't know anything and he's not up at 7 to tell me I could over sleep. I'm just confused.