Do the best you can. You can't please everyone. This is a valuable lesson to learn as you plan the wedding, and it will come in handy when you are married, too. Make yourself happy and others will follow your lead. How involved your fianc is in the wedding plans is also not something you can or should try to control.
Some men refuse to be left out of anything.
This type will not be satisfied with interviewing one or two caterers or bands or photographers, he will want to see the half dozen who are the cream of the crop. He will agonize over picking the perfect wedding song and even take an interest in the floral arrangements. He will make dinner reservations for the most intimate corner tables at the finest restaurants. Money will be no object, even if he doesn't have much. Be thrilled if your fianc shows this much interest.