Yack - I would not be offended. My brother, and my cousin were in a third cousin's wedding party and my sister in law was very angry that through the dinner, pictures etc that he was unable to do more than ask "hi, how are you doing". I'm not saying this would be you, I just understand what he is asking.

Are you close to anyone in his family? My cousin's wife and I tried very hard to entertain my sister in law, but since we didn't know her that well, it fell flat.

I think he was just concerned about you and how much fun you'd have until his obligation is over.