I've worked on cruises for over 7 years. Here are 7 things I'd never do on ships.

• After working on cruise ships for seven 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.

After working on various cruise ships all over the world for the last seven years, 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.

I wouldn't forgo the cruise line's digital app

We're living in a digital age, so most major cruise lines have apps that provide all of the essential information for your vacation.

These apps include logistics like port times, activities, and dress codes. Plus you can often use them to make dining and show reservations.

Some can even unlock your cabin door or make a personal calendar of your events.

Excursions booked independently of the ship come with extra risks

Excursions booked through the ship come with the guarantee that if your tour runs late, the ship will wait for it to return.

Many guests book external tours for a cheaper price, but it's often not worth it. I've seen my fair share of passengers running down the pier and missing the ship.

Excursions booked through the cruise are the safe way to go if you're worried about your ship leaving without you.

Lining up to get off the ship first usually gets you nowhere

Every time the ship pulls into port, it's not uncommon for passengers to congregate near the gangway exits, crowding the staircases and hallways.

This can be difficult for the ship since customs officers often have to come on board and inspect these areas.

Crowding can be a major no-no and can delay ship clearance, so most of the time, the crew ends up sending these guests back upstairs to wait.

If you're hard-pressed to get off early, look into buying a shore excursion that grants you a priority exit once the ship is cleared.

There's no need to pack prohibited items

Certain items like irons, steamers, and liquor are usually not permitted on ships, but guests often pack them anyway.

You may think you can get away with it, but all luggage gets scanned in the terminal.

If you have any prohibited items, your bags will be held longer in the security area and won't be delivered to your room until later. The belonging will also be confiscated until the end of the cruise.

I'd never book a virtual balcony

Some ships offer virtual balconies, a large screen with ocean views, but I don't think they're worth it.

You pay more money for a screen to show you the outside world, and a lot of the time, the electronic adds some heat to the room.

If you want a view, opt for an actual balcony or window instead.

Removing gratuities can affect the livelihood of the crew

Cruise ships typically charge automatic gratuities that are split between a few different departments and are essential to many crew members' paychecks.

But they're not mandatory to keep, and many guests remove them when they get on board.

Unless you're going to individually tip the staff, removing the gratuities affects the income of crew members and their families.

I wouldn't eat at the same spot every night

I know a lot of guests are glued to their favorite food spots on the ship, from the buffet to the main dining room, but one of the best parts of cruising is the delicious and diverse eateries.

Some options are included while others are an extra cost, but I've found you typically get way more bang for your buck while dining at onboard restaurants