Wedding, it's my first but his second

Has anyone here been through this? Marrying a divorced person? I struggled with RJ before but it has never been so strong as now when he proposed and we are planning the wedding. All I think about is that he has done this already before, how it was more meaningful, more special, bigger.. I'm really scared of being judged by his family and friends. Sometimes I feel like I made a huge mistake dating my fiancé. I'm only 24 and I hate being a second wife at such a young age. Please help. 😭😭