Those itching to exit the cabin can slow things down on board Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice Between landing, deplaning, baggage claim and customs, it can be a lengthy wait from touchdown to your taxi – and poor etiquette from impatient air travellers is