No one called you an idiot, I think we all gave you civil responses.
They were just asking you to affirm the fact that your final onboard statement showed your balance had been paid off.
I just happened to Google "casino operations at Royal caribbean" and found this page:
Grant Mcloney | LinkedIn
Corporate Manager Casino Operations at Royal Caribbean International
LocationMiami/Fort Lauderdale Area
IndustryGambling & CasinosOverview
Current Seems like a good place to start to me.