My son (now almost 17) always had to check with me if he made more than a $10 purchase at any one time. The only things he ever buys on his own are lattes from the coffee shop and candy or small stuff from the little store.
Anything "big" he wanted (he got a watch once) had to be cleared by me.
He also brought his own money and once gave me $1 to play on the roulette wheel "for" him. When I won ($30) he wanted the $30!! I teased him awhile saying that since he wasn't old enough to gamble, he couldn't benefit from gambling, but relented and gave him the money.
Carnival Elation March 11
Carnival Imagination Sept 07
Carniival Sensation Dec 06
RCI Sovereign of the Seas Sept 06
Carnival Miracle Sept 05
Carnival Glory Sept 04
Carnival Fantasy Jan 04