Step six just seems to be common sense, that is, avoiding hot spices. Some people with IBS have trouble tolerating certain spicy condiments, such as hot sauce, spicy BBQ sauce, chili powder, hot chili peppers, garlic, curry, and ginger. With ginger, small amounts may be fine for you. You don't have to do it all the time. Once you get a handle on your personal trigger foods, you may only need to keep a diary every now and then.
Alcohol stimulates the digestive track by getting digestive juices flowing.
This can cause heartburn, stomach pain, and diarrhea for some people. Notice, the food step says overdoing alcohol. Some people do just fine keeping it moderate, which is no more than one drink for women and no more than two drinks a day for men. Again, it could be the amount that bothers you. After you eat a certain amount you might start seeing symptoms.