Both me and my sister are getting married next year, 3 months apart. We're each other's MOH and for the most part it's great. However, there is one issue with wedding guests. We have family friends who live abroad who we both want to invite, however it's unlikely they can make such a big trip twice in three months. The background to this is that I am the main connection to this family - one of the daughters is my childhood best friend and her parents were like second parents to me. It's through me that they became family friends. My sister is a bit closer to their younger daughter than I am, but they've never been suuuper close. I'd really like them to be at my wedding given they were a pivotal part of me growing up.
What's the best way to deal with this?! Do we both send invitations to them at the same time? Do I ask my sister if I can ask them first given I have a closer connection?