I don't know if they have access, I doubt it..but we kept all our cash, our credit cards and documents in ours and nothing was touched. i even inadvertently left these things out the first evening when we went to dinner, forgetting they turn down the beds and nothing was touched.
Carnival Fantasy 6/05
RCCL Sovereign of the Seas 4/07
RCCL Navigator 12/07
RCCL Navigator 11/08
RCCL Liberty 7/4/09