No, the voucher does not specifically list the dates for which it is inapplicable. What it does say regarding dates is:
"This offer is valid for a 3-, 4-, or 7- night cruise only vacation package with
Disney Cruise Line commencing prior to October 1, 2005 excluding peak and holiday sailings."
"To redeem this offer, you must book your client's vacation prior to December 31, 2004, by contacting our
Disney Cruise Line Reservation at 1-800-511-1333."
That's it. Everyone knows what peak and holiday sailings are. Right? But, just in case you don't know when you can use it for
DCL and your
travel agent would tell you when you try to make the booking for an inapplicable date.
What it did say in the September 10, 2004 Navigator was:
"To take advantage of Disney Cruise Lines wonderful offer of 25% off your next cruise we recommend waiting until you return home to book. Once you have received your voucher at home, please call our toll free dedicated
Castaway Club line 1-800-449-3380. This offer far exceeds any previous onboard offers (which are non-combinable) Therefore no cruises will be sold onboard this cruise."
I guess cruises commencing October 1, 2005 and later were not being booked onboard prior to that cruise. Those cruise dates after October 1, 2005 must have just been released for booking just recently with the 2006 dates.
DCL is a business and they need to protect themselves from the potential losses caused by these types of wonderful offers. Someone has to impose restrictions, even though the consumer doesn't realize it, in order for the company to stay profitable and wonderful at the same time.

