you will have no problem on the glory, we just returned from a 7 night western carribean cruise yesterday. I did laundry on board, as I was traveling with 3 children. The machines were 2.00 for the washer machine and 2.00 to dry. They sell All laundry detergent for 1.oo and snuggle fabric softner for 1.00. Bring quarters as there is no coin machine inside the laundry area. You can get change from the pursers office.
Have a nice cruise!