hahaha!!
So, I went on the Royal Caribbean website and searched "formal night".
It came back with "about 1,320,000,00 results" WHAT??
This was the first response to my question,
What is the dress code onboard all ships? | Royal Caribbean Cruises
https://www.royalcaribbean.com/faq/questions/generic-onboard-dress-code
Formal nights. Think of our formal dress code as a night out in your best black-tie look — suits and ties, tuxedos, cocktail dresses or evening gowns are all acceptable options. There can be 1 to 4 formal nights during a sailing and is at the ship’s discretion. Our Chef’s Table dining experience also enforces a formal dress code policy.
It did answer my question.
Wherever you are coming from and going to have a safe trip.