It does not have to be a tux nor a dark suit on formal nights.
I have a light gray suit and I was not denied service......

You will see men in tuxes (a few), dark suits, light suits, sport coats, shirts and ties, dress shirts and no ties..................
Ties are not required.
The real scoop is do what you feel is comfortable, within reason.
(obviously no swim suits or shorts)
You are on YOUR cruise to have fun.
If you like wearing a tux have at it.
If not a jacket or dress shirt is fine.
Do not dress to make others happy.
You don't know those other 2,000 people and will probably never see them again.
Yes, believe it or not, there are people that have nothing better to do than worry about what others are doing.
(the 'PC' group)
I say give them something to talk about and wear your tie around your head...................
