Do the grown ups have to dress up for the Pirate and Halloween parties they have on board if they have no kids along?
Well I think you have been offered on this question but your last question was never really answered.
....my spouse can be a bit stubborn when it comes to things like this he rather not dress up for the deck parties and that.
Men.
But are clothes that you can wear that are not costumes that blend in with the theme?
So he could go with the pirate t-shirt as mentioned. Or, are you aware what “Disney Bounding” is?(it’s google-able) That’s where a person takes elements of the character and incorporate them in every day street clothes. For example you could dress him in a regular pair of black shorts or dress pants coupled with a black and white striped shirt or red and black stripe shirt. The strips can be wide or narrow, it can be a golf shirt or T-shirt. Whatever his little heart desires, but red and black match the color of the bandanna, black-and-white match the colors of The Pirate Smee, Captain Hooks shipman.
Just for fun see if you could get him to include either an eyepatch, one gold clip on earring, or the scarf Disney gives you the morning of pirate day after your bed has been made. Then because you enjoy dressing up, you can wear a little bit more and enjoy the cruises you most wish.