3) What is an e-ticket?

An e-ticket is a PDF document that we'll email you before you travel. You'll need to print it off and take it with you to check in for your flights there and back.

Your e-ticket is the only ticket you need to travel - you won't receive a paper ticket. 

If you can't print your e-tickets, you can collect them from the TUI bag drop desk when you arrive at the airport.