Jojo
I think this is more common than you think. Binge drinkers are okay sober, but when they pick up a drink they cannot stop until they are passed out or totally drunk.
In many cases they are very functional, holding a job, providing financially and emotionally for their families, and they are just not as noticeable as some other kinds of drinkers.
I don't think it matters why they lack cravings between binges. Their problem is that when they drink they can't put it down. That inability to stop is their problem.
Hope this helps.
Ann