My friend and I went there last Saturday night. Parking, as always, was a little tricky, but we found a spot right across the street from the place. It was filled at around 8 when we came in, but we just had to sit at the bar for about 15 minutes and we were shown to a table right by the window.
Definitely try the Thai Iced Tea with coconut milk(?), it's excellent. We started off with the wonton soup, which was really good; there were a lot of good vegetables in it. I had the Panang Curry with pork and I couldn't get enough of it. For every meal, you have to pick how spicy you want it to be on a scale of 1-10. I did a 1, and it was mildly spicy but not bland or anything. The atmosphere was warm and inviting and out waitress was very attentive. The food came quickly for how busy it was. There was no loud music or anything like that. I've been coming here since I was about 12 years old, and it's still my favorite place in Pittsburgh for Asian/Oriental food. Lunch is great, too.