Why am I asked for a credit card number when redeeming my Skywards Miles for free travel?

Credit card information is required in order to cover the government taxes and airport charges levied on all ticket purchases, including those purchased with Skywards Miles.

Can I redeem Miles for a one-way trip?

Why am I asked for a credit card number when buying a flight reward with my Skywards Miles?

If there is any delay or disruption to my flight, who should I contact for help?