If you buy online yes. You can purchase at gate, more expensive.
It was only 13.95 at the gate for me. But no you don't have to print
No you dont.
Two options, printed ticket you bought earlier, or purchase or expensive tickets at the gate. Not sure if they can scan you ticket from your phone.
Can I use my phone with the email that has the attached ticket instead of a printed ticket? I left the printed ticket at home.
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