Marriage and last names

So to get the last name that I want I need to make sure that I am playing the correct Sim. I have been thinking about having the wedding party at the bride‘s house because her parents have a nice big house. But I can’t do that if I want her to have her fiancé‘s last name unless I move him in with this family.

I’ve been struggling to figure out where I want these guys live anyway. Both families have home based stores. Guess it’s time to figure it out since they had a lovely dinner out and got engaged.!

Thanks for refreshing my memory!