Northern Thai food generally uses less coconut than other Thai food, although the number one famous food in North Thailand which is khao soi does have coconut. Southern Thai food is very spicy, and Isaan or northeastern Thai food is also very spicy. There is a very popular food called laab which I like but is spicy and also in Isaan they do not cook the meat and so do not eat it. But laap made in north or central Thai is okay and cooked. Thai dinner is supposed to have 5 flavors, which are spicy, sweet, bitter, salty and sour. So there is plenty of Thai food is not spicy. I myself like really spicy food, and actually most of what I eat is spicier than what wifes family and most Thais eat, so when we go to restaurant wife orders for me, because they will automatically not serve farangs food as spicy as most Thais get even for same food. Some Thai food is served without chilis so you can make it spicy by adding chili or not depending on your taste. One thing to remember is that the smaller the chilis, the hotter they are, and green chili hotter than red. When you order if you do not want spicy, just say "mai phet", and they will know what you mean as most farangs do not like spicy food. Here is another thing to remember: do not drink anything with shaved ice as usually this is ice they buy in big blocks and drag along the ground. Ice cubes are okay though. Drinking water in restaurants is fine, it is the ice to watch for. Go to restaurants or food stall which is basy, as food is fresh. if not busy you do not know if food is sitting all day.