We were just there in May. We have 7 kids and let me say Disneys new rules about seating can be a bit of a burden on some. They will not allow a child under 7 to ride alone without an adult or person 14 or older. And they are strict. Thankfully my oldest son turned 14 in Feb so he sat with 2 kids and me and DH sat with 2 kids. Now on buzz don't ask me how we did it since we did tomorrowland first and we didn't hear about the rule til we got to dumbo which we skipped. We actually got away with 2 people to a seat. My 7 yr old rode with her sister, my ODS rode with a sister I rode with my YDS and my husband rode with YDD and ODD. So you never know. All the CMs are different in how far they want to push the rules. I even had an argument with one cause she asked my 7 yr old DD how old her brother was and she said 13. When she asked me I told her 14 so she thought I was lying. My DS can't answer cause he is mentally disabled but mental age doesn't count thankfully at disney. I know what he can handle so that is why I was ok with him riding with his siblings and why we skipped dumbo.
Hope you guys have a fun trip.