Britsimon
Super Moderator
I think people give this a lot more importance than is legally required or actually due. If you were married, and present your marriage certificate, which is witnessed by more often than not, family or friends, it is the only proof/documentation you require.
For some countries, typically not Australia or NZ, arranged marriages are the norm often to take advantage of these situations in countries that have high rates of visa fraud. Consular Officers are trained and aware of signs that may indicate such a situation. They may ask you questions about where you met, or what you did for your wedding where you can explain that you were going to get married at a later date but this came up (they are human and understand circumstance, you won a lottery after all), and may ask you discuss where you got engaged/met/how long you've both been together etc... it will more than satisfy the requirements to issue you a visa, which are, education or work requirements. That is all. Your not applying for a partner visa.
They don't want you shoving photos of you two dating back six years, endless bank statements with your names on it etc through the slot.
I understand your point, but I strongly suggest to the OP that they have that proof ready. They may not be asked for it, but if they are - at least they will be prepared - and being prepared makes them less nervous...