I'm planning to refeed in two weeks in preparation for Xmas but I plan to have 2 maintenance shakes a day with one meal over Xmas and new year.
If you're talking about the actual LT Maintenance shakes, then you don't have them *instead* of meals - you have them before the meals, and the idea is that they swell and make you feel fuller, so that you don't eat so much real food!
Send off for the free samples, if you haven't already - they'll come with a leaflet that explains how they work...
I got some when I had a holiday break a couple of months ago, and I have to say I don't think they're for me. Not in the way they're intended, anyway! I didn't like most of them but got some each of the soup and the summer fruit shake. I think the soups are fine as a meal substitute maybe 2 or 3 times a week, but really couldn't imagine being able to have two a day as well as meals!
If it were me (and of course this is entirely personal...) I'd get an extra week's worth of the normal shakes and keep having one of those a day, all through xmas. Essentially keeping to the day 4-7 menus of the refeed plan. You'll be out of ketosis then, and able to have a bit of social alcohol, but still be keeping your calories in check while getting decent nutrients.
I'd still recommend getting your free samples, just to see for yourself.
It's great that you're looking into it already,
Good luck,
Marianne x