But no negotiation is involved in terms of pricing or explanation of the terms and conditions; it is a very famous legal precedent that accepting the ticket implies acceptance of the contract and all of the terms and conditions.
Buying a pair of binoculars is also a contract between the involved parties. In NZ a purchase agreement cannot contract out of the CGA, but it is very clear that a warranty claim subject to the t’s and c’s of the contract is required for relief, as the first course of action. The CGA is a course of action subsequent where the purchase agreement has failed. ‘Purchase agreement’ = ‘contract’.
The OP asked if a foreign contract provision could be used to argue a warranty claim after the warranty has expired - the answer is ‘no’. That is the correct answer to the question. You would be hard-pressed to make a warranty claim 10 years after the warranty has expired; you need to seek relief some other way, of which a CGA claim is one option.
I think when answering questions it is useful to be accurate as far as possible. It is a bit irritating when people respond with assumed knowledge which is a long way from accurate.