hi just booked our third Disney cruise line vacation this time may 8th 2017 Disney dream 4 nights in the Bahamas well excited we have got a room on deck 9 right at the back of the ship with extended balcony. My question is we normally pay the grataties at the end of the cruise cant remember exactly what we normally pay but when booking I was offered pre pay and its only $96 dollars for both of us for whole cruise that seems to cheep is it a special they are doing or has anyone else done this before and not had to pay anymore on the ship other than bar tips when you buy drinks?? thankyouin advance for your help x