Yes, and it is perfectly acceptable. There is no promised blessing for having the legal side handled concurrent with the sealing. It’s understandable that your family feels the way they do. It strikes me as odd that people would be invited to wait outside. It’s a social insult, regardless of the truths of which we are aware. I think it’s much better to just have a wedding ceremony and a sealing, regardless of when the legal part is handled. The ring ceremony being “just a show” shows serious immaturity. All too often, people make everything about themselves. It sounds like your family is choosing to be insulted. I’d go and wait outside if it was important to my child. Some people need to grow up and love. Your choice to not accommodate your family has clear consequences. If you believe the Lord wants you to have the legal side handled with the sealing, than stick with it. The only reason you need to provide is just that. “I choose to believe this is what my God wants me to do.” No apology. Best wishes!