Hi Stephanie!
I'm so excited for you! A Disney cruise followed by Walt Disney World?!?! That's going to be amazing for you. The Disney Dream is a magnificent ship. I loved sailing on it a few months ago, and I can't wait to be able to do it again!
Whether or not your teenagers will be able to stay in the same teen clubs depends on their ages.
Edge is for kids 11 to 13 and
Vibe is for kids 14 to 17. Both are fantastic! My kids LOVE the clubs. Once they open for business, I have to practically drag my kids out of there so we can have a family dinner!
I don't know how old your kids are so I would register them in their respective clubs and then ask the counselors if they could stay together. Normally, if they are very close in age it won't be a problem. The older one can join the younger one at Edge, but usually it's harder for the younger one to join the older kids.
I hope this helps! Have a magical sailing.