In my early days of cruising I became so involved in making sure that I had "everything": Formal wear, power strip, duct tape, bathing suits, camera, batteries, charger, binoculars, sunscreen, hat, etc. etc. etc. that I forgot one major thing.
We were about ten minutes away from home, on our way to the airport and I asked my wife to check the flight time. She asked where the travel wallet was. I suddenly remembered that it was setting on the dinette table.
Without that we wouldn't have had our documents, luggage tags, flight information, extra credit card or passports.
Don't let the "packing forrest obstruct the trees".
Have a fantastic cruise and make sure the important stuff comes before the incidentals.