"Real maintaining is about not gaining weight during the holidays. Stay away from "starchy" carbs in the evenings. Carbs are fuel for the body and more likely to be stored as fat when eaten at night...
Think of your body as a car. When you go on a road trip, you fuel the car up BEFORE the road trip...not after. So you can fuel up your body early in the day. It doesn't make much sense to fuel up your body to go to bed. Starchy carbs (bread, pasta, rice or potatoes) eaten late in the evening will usually be stored as fat.
When out at a holiday party in the evenings, stick to proteins, especially when you are drinking alcohol (carbs). Our bodies need carbs...but carbs are for refueling your body early in the day, like fruit and veggies....starches if you must. But later in the day or evening stick to proteins, it puts something your stomach but not excess fuel...or fat."
--from my book "Real Health, Real Life."