The person who took our order was very knowledgeable about ingredients. There is a whole page of vegetable entrees that can be made vegetarian/vegan upon request (default preparation usually involves fish sauce). I had a vegetarian pad Thai without egg, and my dining companion had a curry that was absolutely amazing.
Spicy dishes are marked as such on the menu, but you can specify mild, medium, or hot. My companion requested a mild curry and that's what he got -- so if you usually shy away from spicy dishes, you might be able to handle them here if you request mild preparation.