As most churners know, American Express always has the best deals, but most non-buisness owners don't bother becuase it's so hard to meet criteria when most of Australia doesn't accept Amex payment.
My question is, is there anything dumb I'm missing for why it wouldn't be a great idea to open Amex cards prior to Europe and churn them over there? Has anyone tried similar? Am I missing niche disqualifiers? Or is it just too cost prohibitive to use a non-travel card?
You'll get super shitty value for exchange rates and possibly international fees on top.
Assuming I understood correct because your question is poorly worded.