Well if you follow the menus then you don't need to count calories, and to be honest, unless you're going to go way off them then you should be fine as it's just common sense with what you can swap for what.
To be honest, when I first weighed out 115g of chicken for my first roast dinner on the FAF I was surprised how much was there! I didn't actually eat all 115g, as it was too much!
Plus, if you join RC either by getting the at home pack or going to a class, you'll get the portion pots which already have the calories calculated eg. the yellow portion pot full of dried pasta is X calories.
I check on calories in food when I go shopping, mainly on the treats, but other than that I don't really count them.