Thanks D. A few comments:

1. There is a precedent for me taking the kids alone on small weekend or half-week trips (camping, regional trips, domestic airplane travel too).

2. Am I ok when it gets reversed? Yes. My W has never taken the kids alone anywhere, I've always been there OR her parents have and taken up the slack. But if she were to grow a wild hair and decide to do so, I would be fine with it if she promised not to drink while alone w the kids. This is a standard I hold myself to on dad-only trips: no alcohol until kids are bathed, teeth brushed, and in bed watching a movie, even then it's only two beers. Telling her what to do veers towards controlling but she has a drinking problem. I recognize that if we D I will have no control here.

3. Do my young kids want to go on vacation without Mom? If asked directly I'm sure they would say no. But I've done this many times so it won't be anything new for them sadly.

To me this is one of the many small steps I've taken towards life without W, although it would be the biggest one yet.