SoberRunner
I'm very similar to you, or at least I was. I used to drink only on a Saturday. Then only on a Friday and Saturday. Then maybe one of the week days. Then I found that one bottle of wine was insufficient. So not I drink two bottles of wine at least in one sitting at least twice a week. I slowly but surely increased both in frequency and quantity. It's a real slippery slope.
On the subject of holidays weekends etc. I have my most successful periods of sobriety when I start at the "difficult" times. If I start on a Monday I'm bound to wilt the next weekend. But if I "sacrifice" one of the relaxing, celebratory days I find out it wasn't so hard and I want it to mean something.
This period now I started with two days left on my holiday.