I've worked on cruises for nearly 10 years. Here are 7 things I'd never do a ship.

• After working on cruise ships for nearly 10 years, there are some things I'd never do on board. 
• I'd take advantage of the cruise line's digital app but would skip paying for a virtual balcony.
• I've found booking excursions independently isn't worth the cheaper price. 

After working on various cruise ships all over the world for nearly a decade, I know a lot about their inner workings, from the best onboard activities to the tastiest dining options.

But with this knowledge, there are also things I'd now never do on ships.