Careful about recovery food too, the three weekday workouts are very unlikly to be glycogen depleting sweatfests, 1 hour classes are often inclusive of ditzing around, warm ups and cool downs, it is not likely you dent your glycogen stores, so protein if you use it at all after a workout needs to be low low calorie. And those weekend rides burn depends on the effort.
I don't buy into cravings as a physiological sign. When I crave a really nice beer, it is my mind that is in control, not my body.