Odd on phone is ok, make sure you can see the barcode
I say either
Do not try to use the pdf of your ticket on your phone. Most of them actually say "not valid for mobile entry". If you want mobile entry it has to be a delivery option and should be delivered to you as a QR code and not a normal ticket with a bar code.
Print your tickets to be on the safe side
Best to print your tickets.
Either or.. If all else fails will call has all tickets that are purchased info
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