Is it normal to have drank 12+ standard drinks a day for about 10 years and still have no shakes and still be able to quit for a week with zero issues besides craving alcohol?

Looking to hear from the older alcoholics. I’m 31 but have been drinking close to 12 drinks per day since I was 18. Recently I quit for about a week before I couldn’t hold out from the cravings/alcohol-abstinence boredom that comes when you are addicted to alcohol. But besides that, I showed no physical signs of alcohol dependence. No problems with sleep, no shakes, none of the physical signs, just the mental struggle. Is this normal for 31? I really don’t want to get to the point where I get the shakes if I don’t get a few drinks in me.