Update:
Now there's this new ticket selling system, it is some what improved but still waste of time.
So people can come here to get a number starting from 11:45, and come back later at 12:30 to buy a ticket. After getting the ticket there's more waiting, since the class doesn't begin until 1pm. So to go to this 2 hour pottery class, I will have to waste 1 hour and 15 mins in total loitering. That's quite a lot of time. The half an hour before and after ticket selling time is too short to do anything. The $15 class is only 1.5hr long, because of the demo and clean up, also sometimes takes a bit longer for the instructors to prepare everything before the class begins. Half a day is gone by the time the class is finished. I get more and more disappointed every time I come here. One of the instructor looked very annoyed every time when I ask her any question. I am a noob so of course I don't know any of the proper terms, I am just here to learn.