I have tried out Vieng's twice now and each visit was equally disappointing.
Both visits I tried a couple different sushi rolls, all were of poor quality and I honestly didn't feel entirely comfortable eating the raw fish after a few bites and didn't finish any of them. For entrees I tried the Curry Chicken and the Thai Cornish Hen. The Curry Chicken was pretty bland and typical of something you can get out of your local "Chinese" takeout, just twice as expensive. The Thai Cornish Hen was strait up terrible; it was overcooked, flavorless and poorly presented (who garnishes with iceberg lettuce????). The service I had during both visits was also average; the drinks were made well so I'll give them that.
Overall I think Vieng's is trying to be something they aren't and due to their locale they feel they can overprice their food and not sweat the quality. Needless to say I don't feel any need patronize again and advise everyone to go anywhere else