Any time between 5-7, you'll most likely have to wait outside for 10 minutes, but no longer. They'll take your order before you're seated, and your food usually arrives moments after you sit down. Certainly not a place to take a friend or colleague to have a conversation, but a good place to swing by for a quick eat. The portions are large for the low cost, but the quality lacks. Unless you're a Thai expert, however, I doubt you'll notice. They're heavy on the grease and sauce, but hey, it's FILLING!
Overall, it's a fun experience - or great takeout (I would estimate over half their business is takeout). Give it a shot for a $10 meal!