When my fiance and I got engaged, I chose his sister as one of my bridesmaids. She brought up the idea of having her son as a junior groomsman in our wedding. At the time I thought it was a great idea because my fiance and his nephew have a great relationship. However, the more I think about it the more I dislike the idea of having him be part of the wedding party. He's 10 years old and has a hard time focusing. I'm nervous that he will be a distraction during the ceremony and formal photographs.
This past weekend my fiance's sister and his nephew were up visiting and the nephew blurted out that he wanted to be a junior groomsman in our wedding. My fiance's sister told him it wasn't appropriate to go asking for that title and I intentionally didn't bring it up the rest of the weekend. How do I tell her that I'm not comfortable adding her son to the wedding without upsetting her? Is this something I should just let go and allow him to be part of the wedding party? I'm not looking to upset my future family-in-law but I also want the day to be about my fiance and I and not about wrangling a distracted 10 year old.