My and my fiance are having a joint party that includes a scavenger hunt all around our town. My question is who should I invite. We of course will be inviting our bridal party. His grooms men include his father and mine includes one of my siblings. Are we supose to invite my parents as well since my fiances dad will be joining us with his mom? Do I have to invite my other 2 siblings? Do we invite our bridal parties significant others?