On the 5th floor of Terminal 21 mall, go to the back where the Pier 21 food court is. Make sure you purchase a food card because the individual vendors do not handle money transactions. The vegetarian stall is on the far left as you enter. I ordered the "3 mains plus rice" which lets you pick three courses of your choice. You then hand the prepaid food card to the vendor who scans it to deduct the meal price. The 3 course meal is 40 Baht as of today (Aug 2014). Cheap, filling, good, and very convenient if you're in the mall area.Pros: Location, price, vegetarian.
Cons: Noisy, may be hard to find a table to sit at in th