Hi Melanie,
You're going to LOVE the Disney Dream! It's a magnificent ship, and there' s always something new to discover:)
As you know, Vibe is for 14 to 17 year olds. I suggest that you speak with the youth counselors on the day you arrive (Open House) to ask if they they can stay together. Many times, if space is available, they will. If that doesn't work, they can hang out together in
Edge, which is for 11 to 14 year olds. My kids did exactly that when we sailed on the Fantasy and they had a blast! They are 11 and 14, and are STILL talking about the activities. My daughter made friends and keeps in touch with them through texts and social websites.
I hope this helps. Both clubs are very cool, and FUN! They will enjoy whichever one they choose to be in. Have a magical sailing Melanie!