We took the advice of the duct tape and actually used it! It's a simple item to bring with and has a hundred uses--mine was actually to hold my bra strap under my formal gown when it was riding up!
We didn't use the power strip that was suggested on this board--found that plugging in just a hair dryer and curling iron was no issue with the couple outlets in the room.
Also wouldn't pack the big insulated mugs suggested b/c they take up too much room, and with the sun on deck, the drink inside didn't stand a chance for as big as the cup was.
A nightlight would be helpful and plenty of singles to tip with from the motel, to transfers until you are tucked in your room.
Something that has been helpful for us on all our vacations is taking an expandable folder (about 5"x 11") to hold your plane tickets/boarding passes, passport/birth certificate. We also take copies of our insurance cards, and the front/back of our drivers license and any credit cards we have with, just in case our purse or wallet is stolen. Once on the boat we add any cash to this folder and stow all of it in the room safe. It makes it convienant to have just one spot to turn to for all the important info.