After hearing many good things about this restaurant, we stopped by on a Saturday afternoon at about 2:45. Upon entering the restaurant the hostess quickly grabbed menus and walked us to a table exclaiming "We close at 3, so hurry up." Instead of being rudely rushed, we decided to leave.
Yelp has the hours for this restaurant listed as open until 10 PM on Saturday - we aren't the type of people to walk into a restaurant as it is closing and demand service.
However, the staff at Pittsburgh Thai need to understand that politeness goes a long way. We would have come back to try again had the message been delivered in a courteous manner.
Good food doesn't trump good manners, folks.