I don't think any "I told you so's" are warranted. He's an alcoholic nowhere near recovery. Drinking is what he does.
I think your girls' night + vacation is AWESOME. Giving yourself some space to think or just to RELAX for once is such a lovely gift.
I wish I had done that with my daughter the few times I walked out. In my case, it was the middle of winter, DD was in a carrier and I didn't have anything with me, nor did I have anywhere to go (or a vehicle to get there). I walked to a café, nursed her, talked to her about how it was not ok for a man to treat a woman the way her father was treating me...and then I had to go home. I had no cash, no diapers, nothing. When I got back, he smugly proceeded to let me know he had "won".
Take your time and enjoy your daughter.