Yes, that causes grief. My youngest is so happy now that she is 12 that she won't have to wear the braclet anymore. If they want to be able to do things together they may have to not go to the youth activites OR sometimes they will let an older sibling come to the younger's group activites, but that will depend on the crew.
Carnival Cruise Lines:
Fantasy 90, Celebration 95, Victory 05, Conquest 05, Spirit 6/06, Freedom 6/08, Holiday 7/08, Victory 6/09, Valor 9/09, Dream 6/10, Splendor 8/10,Conquest 8/11,Magic 11/11,Triumph 4/12,Spirit 7/12,Freedom 11/12, Triumph 2/13 - The fire cruise
NCL Dream October 2006, RCCL Mariner OTS June 2007, Celebrity Silhouette 2013