Thai based credit cards

[S13SFC]

Hi

My wife and daughter will be based in Bangkok for 3 years from September with a Thai bank account and access to credit cards.

Currently, we use the BA Premium and Virgin Premium cards to trigger 2-4-1 vouchers annually but we are very unlikely to trigger them after that date.

I’ve switched to Amex Gold to give flexibility, but we were wondering what my wife would be better off using in Thailand to gain points and which airline we should prioritise?

Thanks in advance.