Yes, I was there end of last September, we used multiple credit cards (for lots of things) and had no trouble.
Only issue was at a small chain Vietnamese Pho place that slipped in an unauthorized dynamic currency conversion scam on me (I paid using a credit card with no foreign transaction fees). I called out the restaurant staff for it, they pled ignorance. It was pocket change, but it still annoyed me as it was completely dishonest (after paying by credit card, the receipt printed out and claimed I had explicitly accepted the "convenience" of utilizing their currency conversion, which I had certainly not).
Anyway, I'd have no worries about using credit cards. Of course, as anywhere, be sure you have multiple options (more than one credit card, debit cards for getting cash at ATMs).