Oh, I
totally have a plan of attack!
I'm a calorie-counter too. I think that we have it a little easier than others do during the holidays, as we can stretch our plans to fit some odd or infrequently eaten foods. If you're like me, though, some foods just trigger wanting more--so once I've pinpointed them, I just skip them and move on to the things I can enjoy in moderation.
A cubic inch of Brie is about sixty calories, but it's so creamy and rich that you could probably spread that cubic inch out on a lot of bites of something lower-calorie--raw veggies, for instance, or crispbreads, or slices of apple. If cheese isn't a "moreish" food for you, I say enjoy it--I know I do.
Use the same philosophy for the other goodies there. Sausages taste great; have a few bites of one with a big helping of sauerkraut or beans or whatever else you like to eat with sausage. The key, I think, is having ONE--and staying away from all the stuff you can't eat by ones and twos. (For me, that'd be the cookies.

)
Bringing something for yourself is
definitely an option. In fact, get with the host(s) of your two get-togethers and see what you can bring for everyone if you like. A lot of weight-loss-friendly stuff is also delicious stuff, so maybe you could bring a pot of vegetable stew, a dish of baked sweet potatoes, or some green beans for everyone to share so you feel more a part of the meal. Bringing just your own dish also works, but I find that if I don't get to eat at least some of what's on other people's plates, I feel deprived; if you're made of stronger stuff than me, though, go for it!
For Thanksgiving, I knew I'd want more calories than my usual target of 1500. So I planned to have a "big eats" day of 2200 calories. (That was still considerably smaller than the 5000-plus calories I probably packed away on regular Thanksgivings.) I ate what everyone else at the table did, just in different proportions, and stuck to my allotment without feeling left out, deprived, or un-festive. The scale didn't even seem to notice, I'm happy to report.
Sorry this got so long-winded, but I just wanted to say that you can TOTALLY handle Christmas without wrecking your plan! Also, crawfish? in Chicago? At least a few of your folks MUST be from down here in Louisiana!
