If your Air Canada Vacations package becomes available at a lower price than the price you paid, the Price Drop Guarantee will let you take advantage of the new lower price, up to a maximum refund of $400 per person. Price Drop Guarantee is valid for bookings made between May 1, 2016 to October 31, 2016. For travel from November 1, 2016 to April 30, 2017. Note: Applicable to: Participating resorts in Mexico & the Caribbean.