There's always a line up at Pai, and that's for good reason: the food is just amazing! Luckily, we didn't have to line up because we made a reservation (over a month in advance).
The menu is extensive and offers a great variety of drinks and authentic Thai food. My favourite dish here has got to be the Pad Thai, but you can't go wrong with the Khao Soi or curry dishes either.
The atmosphere is lively, although it could be a bit loud. The service is very good as well.
If you happen to be in the financial district, Pai is a fantastic place to catch up with someone over dinner, get to know somebody better, or just grab some food with a group of friends.