Hello Kathryn! Thanks for coming to visit us at the Disney Parks Moms Panel! We love helping people to plan their upcoming trips to the Most Magical Place on Earth, even if it's two-years in advance!
You have certainly selected the best possible place to celebrate your "grand gathering" for these families. The good news is that the
Walt Disney World Resort allows Guests to book a room-only reservation up to 499-days in advance of their planned vacation. To book your room-only reservation that far in advance you must call (407)939-7639. I like to book my room-only reservation and then call back after vacation packages are released to revise my booking to include tickets to the Disney Parks and sign-up for the Disney Dining Plan. While there is no guarantee that your room choice will still be available, I have never had a problem with this planning strategy.
Kathryn, you still have plenty of time before your March 2022 arrival, but it's OK to be excited. This sounds like a very fun event that you are beginning to plan. I am sure you will want to capture every magical moment between the two families. You might consider
Memory Maker. This service will allow you to download photographs captured by Disney PhotoPass photographers and while on Disney attractions. These photographs always seem to capture you at the best possible times during your vacation to the Walt Disney World Resort.
I hope you come back to visit us many times at the Disney Parks Moms Panel as you continue to plan your 2022 vacation!
Hakuna Matata! Jonathan G.