Originally Posted by hellside
You can call the resort to check the validity if there is a serial number on the ticket
Actually I would be careful with that, most resorts have a policy that forbids the reselling of tickets.
There is a good chance they could actually deactivate the ticket if they know someone is trying to sell it, this would be done via the ticket serial number.
I know some resorts will specifically look for people reselling on ebay and if they put an actual photo of the ticket and serial number they will null the ticket.