Here is the fine print from the contest website:
"Beginning approximately December 1st , 2011, while supplies last, purchase a specially marked package of Centrum®, Caltrate®, Advil® or Advil® Cold & Sinus products and peel off the plastic label to find a unique alpha-numeric code. Visit www.spinUwin.ca to register and find out what you have won. Contest closes August 31st, 2012 at 11:59 PM, Eastern Standard Time (the "Contest Closing Date").
To participate with NO PURCHASE NECESSARY, clearly print your name, mailing address and a telephone number on a plain piece of paper along with a minimum 100-word essay telling us what you like about Centrum®, Caltrate®, Advil® or Advil® Cold & Sinus and mail to: Pfizer Consumer Healthcare "Spin U Win" Contest, No Purchase Request, 4412 - 14th Avenue, Markham, Ontario L3R 0J3. Limit: one (1) non purchase entry per household. You will receive back in the mail an alpha-numeric code. Visit www.spinUwin.ca to register and find out what you have won. All requests must be received by August 15th, 2012 and become the property of Pfizer Consumer Healthcare (the "Sponsor")."
Grand Prize:
Trip for two for a choice of 1 of 3 Rivers of the World cruises. Approximate Value $25,000 (CAD). Cruises includes a choice of one (1) from the following: Nile, Yangtze and Rhine/Danube.
Everyone Wins Prize! $40 Value Coupon Booklet:
Minimum prize to be won with valuable high value coupons on participating brands. The approximate retail value is $40.00 CAD.
Moe says...
If your an Advil Lover hang onto these large Value Coupons for when Wal-Mart has their Advil sale usually 4 X a year.