Newborn at a wedding?

Before COVID comments start rolling in, the wedding is not until November.

My older brother is getting married in Nov. We are due with our 2nd mid October. If it were any other wedding we would miss. My oldest is the flower girl for the wedding so I would feel terrible not going (and the fact he is my brother and we are very close!). The wedding is a 3 hour drive away. Based on our due date and me delivering early last pregnancy baby could be anywhere from 3 weeks to 6 weeks old. Has anyone brought a young baby to a wedding before or out of city visit? Any tips, ideas, things that helped or extra precautions to take. (Baby will be in the room with my husband or family member during reception as reception is at the hotel we are staying at).