Really enjoyed my dinner at Khao San Road. Came with two friends and we each got a dish and split to try as much of the menu as possible. I really liked the decor and space. The table was the perfect size and it didn't feel too cramped.
In terms of waiting, we didn't have to wait but they do not seat you until your whole party arrives.
Between the green curry, pad thai and pad gra prao, I would definitely re order the pad gra prao and pad thai again. The green curry was okay but a bit runny for my tastes. The spicy here is not super spicy but the waitress warned us just in case.
Decor was great and the whole place was super busy but we service was still good. We had our waters refilled at least twice and the food was prompt. Would definitely come back for lunch or dinner.