A man can feel the need to grow up and have a family, especially when he finds a woman who inspires those feelings in him.
It's easy to make everyone feel included! If you have close friends and family that can't attend, consider a reception once you return home. There are hi-tech options for the actual ceremony too, like video cams so guests can watch the wedding live. Or, go the social route and create a #hashtag for your wedding so family and friends can follow along.
Escaping your to-do list and unplugging for a few hours/days will dial down your stress levels and make you better partners.
Fans of your marriage will always be on the side of your relationship. They won't pick a side -- they won't side with you or your partner, they won't split the two of you up.