I’m not sure this topic will ever resolve itself cordially. One half dozen to the other believes in whatever makes you feel comfortable and the other half believes in the dress code.
I personally enjoy wearing shorts all day in the sun and then putting nicer clothes on for dinner, a show, and then the piano bar. Others are more comfortable in full relaxation mode attire.
I’m sure we can all agree that people should do whatever they are comfortable with and makes their vacation worth the money they spent.