Cabin crew points out the one ‘disrespectful’ behaviour that you need to avoid on flights

Social media is rife with secrets of the travel trade, with those working behind the scenes of the industry revealing some of the best - and worst - things you can do when holidaying.

One flight attendant once spoke out about her best tips on getting free upgrades to first or business class, while also offering the best seats if you want to join the 'mile high club'.

Another air hostess also revealed why there are tiny holes in plane windows - and we've not even got on to the topic of cruise ships yet.

Now, yet more flight attendants have revealed some extra tricks to the trade. Except this time, it involves attitude you should really avoid due to its 'disrespectful' nature.

Kris Major and Allie Malis spoke with CNN about their key travel questions.

And the issue in question? Moving seats.

The topic of seats has been in the press in recent weeks, with the likes of easyJet, Jet2, Ryanair, and TUI one step closer to having to scrap fees to book to sit with your loved ones or mates.

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And it's the concept of paying for seats that has seen Malis offer some sage advice on swapping where you are booked to sit on a plane.

He said: "If a passenger wants to ask another passenger, we can’t stop them.

"It’s in our interest to get people together, because you don’t want the grief of people being separated.

"From a practical standpoint, I understand… if you have three people crammed in one seat and an empty row up there, shouldn’t everyone just be able to spread out? What a treat that is when the flight allows you to.

“But then also respecting that there’s people who have paid extra to be there and that someone hasn’t and that’s unfair."

The Petitions Committee of the European Parliament is set to look at a complaint from Alfonso Rodriguez, president of the consumers association in the Balearic Islands off of mainland Spain's east coast, regarding paying to sit with your friends or family.

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In his complaint, Rodriguez said: "There have been problems with passengers who have had to leave their 13 or 14 year old children alone. The flight crew has had to endure their anger and this can even affect the safety of the flight."

The parliament can't enforce any changes, with that down to the European Commission.

A spokesperson was quoted in Spanish News Today as saying: "You are right, these types of policies used to fragment prices have become more common.

"They are adding a charge for each part of the service, whether is it seat assignment, luggage, food or drink. I imagine that they will soon ask for a payment to be able to smile."