My daughter is getting married next year in Italy. So as we live here we don't have much to do with the planning, just the paying for it and being there. The kids are doing most of the planning on their own, which they get things done the way they want it. I will put in an opinion if I am asked but not unless. My MIL did interfere in our wedding as to who was going to be on the guest list (more than we had planned for). So we decided this is going to be our daughter and SIL's day and we will help with decisions only if asked. The reason the MIL may have interfered is that she does not have a daughter as was the case with my MIL, she has 2 sons, so has no opportunity to interfere in a daughters wedding.