Answer:
Weight Watchers points are actually spent, rather than earned. Weight Watchers uses a formula based partly on your starting weight in order to assign you a "point limit" which is the number of points you should spend in one day in order to have stayed within your calorie requirements. When you eat in a restaurant, you are actually spending some of your points. Weight Watchers has resources and books available which tell you the point values of thousands of foods at hundreds of different restaurants.