From my understanding with a suite, you receive Priority not FTTF. There are some small differences from online literature. I understand that there are some that do not think it is a good deal. For us, on out past cruises, we enjoy being able to hang out in our room while the rest of the ship is crowding the common areas. So for us, it is worth the extra $60-100.
My main questions relate to the Priority Boarding with a suite and what others have experienced without FTTF in regard to access to their suite while the rest of the ship without Priority and FTTF are mustered in the common areas.