Yes, I think we did it on the last sea day. And you are correct in that you can call the desk too. We were wondering by and decided to stop.
Also there is a note in the perks list that says you get $5 in arcade tokens too. But that is only if your are a Platinum level kid. We tried to get them for our daughters but they said "no" (our daughter are not VIP yet... 2 more cruises)
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