Hi, Rimmy and welcome back. I'm new on this forum but have a few 24hours. I've seen folks in and out of the rooms (in and out of sobriety via AA) and have seen the lucky ones finally "get it". Please don't ever feel that slipping is a failure. Getting back and trying again is a success. And your coming back and sharing strengthens us all.
A lesson was recently brought home to me, that the disease of alcoholism can be so progressed that we can no longer detox on our own. You are probably fine without that help but it can help you and others to be aware of that possibility. It seems that in detox, they do give you drugs to help with that early withdrawal trouble. And they monitor you for dangerous blood pressure problems. Groucho will tell you; read his posts. And he suggested to someone else to read the "What to Expect" sticky.
Best wishes from the Snowgoose.