I sent copies of the tickets. I received this email back.
Thank you for contacting us regarding your Walt Disney World ticket media. I personally assure you that your message has been received.
Depending on the amount of research required, our response time may vary.
We look forward to assisting you. If you have not already done so, please send a copy of the front and back of your tickets, with your name, daytime telephone number, where and when the ticket was purchased with the purchaser's name, and the form of payment used to Ticket.Usage@DisneyWorld.com. We are unable to provide usage without this information.
I sent them where I purchased them (UT), AMEX charge and date.
8 days later they sent me an email with the number of days remaining.
As a general rule, if your vacation is for more than 3 days and less than 11 days then it is not a good idea to use up days on an old (non=expiring) ticket and also buy a new ticket for that vacation. Otherwise the amount shaved off of your ticket budget by the old ticket may be as little as 13 dollars per day.