@Nick ********
I think Steve is a troll. He's putting out advice like how he claims he accompanies his wife to Phnom Penh without a passport (which is illegal and no hotel will accept a foreign guest without one) and they "do trading" in Baht. That's the funniest story I've read on here in a long while.
Everyone knows that a border pass, if accepted, can only be used in the province entered.