I've been traveling to Thailand for almost 20 years now, and can speak and write some Thai. I own a home in Thailand, and also Las Vegas. Las Vegas has many Thai Restaurants but you won't always find Thai cooks in the back, or even cooks that are any good.
Sakun Thai is authentic Thai Food. It's as good if not better than the many restaurants I visit on a daily basis in Bangkok. If you want to try REAL Thai food, with exceptionally friendly staff, go to Sakun Thai.
They can serve some dishes not so spicy, but remember, Thai food is best served when spicy. So grow a pair, and sweat a little :)