I'm with you on this MR, I've got a CC from back home just in case, saying that I got the new card in 05, on it was a number to ring to activate the card, I never got around to doing it and the card expires this year, so whether I could still activate the card I dunno.
CC from any country are a bad idea over here, when I first arrived here 5 years back I heard many horror stories of people who had used their cards in BKK, and for example, a smiling waiter kindly copied the card details and went on a spending spree. I think that was in part to do with the old carbon copy swipe machines, so it may be a wee bit more secure now.
I think debit cards are your best bet.