Bit restrictive IMO, I'm going back out to Vietnam Wednesday but still just use my UK bank account for all transactions even though I'm there. So unless I open an account there I wouldn't be able to buy it. Not bothered as I am not paying the club anything more until these owners are gone.
I don't know about Vietnam but in most countries its hard to open a bank account without some evidence of residency there. Not sure how it works in EU countries.