Thank you very much for your swift response. I have diligently tested your recommendations, exploring options on Newegg as well as the "other 8% off GC" website. However, I have encountered a roadblock - none of these platforms permit me to purchase their gift cards from Canada. They require a valid US phone number (although I attempted some free online US VoIP numbers, they proved unsuccessful), along with a US credit card (unfortunately, PayPal Canada and Canadian bank US dollar credit cards are not accepted). It's becoming quite the puzzle.
While I do have friends in the US, I am hesitant to inconvenience them for a mere 10% discount (which might even be less considering the need to cover the AARP membership fee, given my friends lack AARP memberships or the potential 8% discount from alternative sources). Additionally, arranging payment to them presents its own set of challenges.
Interestingly, it appears that individuals from Mexico can still access the AARP rewards program through the use of a VPN. I'm open to the idea of accessing the Rewards program after paying for an AARP membership (as Canadians are allowed to join). My query pertains to whether I would then be eligible to purchase discounted Carnival gift cards through the rewards program (typically reserved for US residents). It's possible that the answer could be negative, as suggested by this thread
https://community.aarp.org/t5/AARP-Rewards-Connect/Canadian-purchase-of-Carnival-Gift-Cards/td-p/2453426
Your insights on this matter would always be greatly appreciated.