'I worked on a cruise ship and this popular holiday shoe is banned during the night time'

When packing for a , will bring their comfiest shoes to explore the ship's mighty and large deck and the incredible land of each However, cruise ships completely change their dress code once it hits night-time, and passengers are being warned not to wear these popular holiday shoes on deck.

A former cruise musician, who wishes to remain anonymous, warned: "There are rules that they have in terms of restaurants, where there is a dress code. That also depends on the time of day you go to the restaurant. You would have to wear enclosed shoes.

"It really depends on the time of day, you can genuinely wear what you want on the ship, but in the evening, they want to execute fine-dining, so you can't wear slippers, flip flops or sandals. During the day you can, but not for dinner."

According to the holiday guide despite your hefty paid ticket, you're not allowed to go into select dining rooms wearing whatever you want.

"Before you go on your vacation, be sure to check out the dress codes for the restaurants on board. While some may be casual, others won't honour your reservation if you show up wearing shorts and flip-flops," Islands reported.

The former cruise worker further advised how to dress formally: "Men have to wear a jacket with a collar, it can't be a t-shirt, and that's mainly in the night-time for fine-dining.

"Every company is different. Some nights we have an evening called dress to impress or a roaring twenties night where you see people wearing top hats. It just comes to the kitchen, you can't have no shirt or no shoes on."

According to , cruise lines such as Silversea Cruises have an onboard dress code for their ocean and expedition ships after 6pm.

They said: "Women can wear trousers, a blouse, a skirt or a casual dress for an elegant casual evening. Gentlemen may wear an open-collar shirt and slacks.

"Regardless of the daily dress code, jeans, shorts, baseball caps, hats, sneakers and flip-flop-type footwear are prohibited after 6pm. Casual wear is suitable in outdoor venues no matter the time."

Another popular cruise line is Princess Cruises, which also has a strict dress code. In the dining rooms, shorts, pool wear, and baseball caps are not allowed. Shoes must be worn at all times.

Jeans are allowed to be worn as long as they aren't fraying and don't have holes. Passengers who do not comply with dress code rules could be escorted out of the restaurant, or, in the worst-case scenario, their holiday could be terminated.

code of conduct states: "At all times while on board and during shore experiences, guests are expected to conduct themselves in an appropriate manner and with due regard to the health, safety and enjoyment of all other guests, crew and shore experience guides.

"Failure to comply with the code of conduct, disrespectful or offensive behaviour may result in individual guests or whole parties having their holiday terminated and having to make their way home at their own cost."