Hiya Brooke!
Welcome to planDisney! I love visiting Walt Disney World Resort with my extended family and I just recently visited with my brother and his family! We were all able to share our plans and make plans for each other very easily by connecting on the
My Family and Friends List.
If you haven't done so already, invite your brother and his family to your list. Every person in the party should either have an account (if over the age of 13) or have their name entered. If they are under the age of 13 or if you don't want them to have an account you can just click "Add a New Guest" and enter a name. You can then link tickets to the people you manage. You should also see your extended family on your list once they accept the invitation to join you. If you are responsible for a family member you can select how much access your brother has to their information. I like to use a computer browser and when I click on my young son's account I can see all the guests who can manage his plans and photos. I then set it up so that my brother can manage "
Only Plans They Share" and I also linked the
"Disney PhotoPass Photos" as well. (You will see why below) You can also select to
not have your kids have any shared plans with your brother. I recommend however if you are planning and enjoying this trip together then I would share the whole party so that shared plans are seen by both. Then if your brother can grab a great
dining reservation or secure a
Virtual Queue boarding group he can select everyone to join him. The same for you! There is always an option in every kind of plan booking to select who you want to apply it to as well. You can unselect a guest that you are linked to and modify after. I do this all the time with my dining reservations. Now, you can always just share with only your brother's account and not have any link to his kids by just inviting his own account to connect with you and making sure to secure your kid's accounts. To do that make sure your brother's name is removed from accessing them. Just select "Remove from My List" for each person you want to remove from accessing your kid's plans on the
Family & Friends List.
One of the things that I always do when traveling with my brother is to purchase
Memory Maker together. We split the cost and it is linked to one of our accounts. However, since we share our Disney PhotoPass and plans on the Family & Friends List we can see all of our pictures together. The person with access to the photos without the watermark downloads them for the group. This makes it so much easier to have those large family photos with everyone in the photo.
I do hope this helps and that you have a magical time!
Happy Planning!
-Nimmy