No more alternate years. Never understood dragging your kids round to parents or PILs for the most over-rated day of the year.
This ... Although I wouldn't say Christmas is overrated, as it can be a lovely cosy day, for you, or you and your partner, or you and your partner and kids, or you and someone else you love that you're spending it with. (eg a parent or aunt or friend or neighbour.)
I have also never ever got the desperation to drag your arse halfway across the country (or world,) to visit people on Christmas. There are 51 other weeks in the year that you can visit them - and they can visit you!
I have spoken to (in real life AND online) sooooo many people who are stressed to the nth degree, because of trying to keep everyone happy at Christmas. So many fights over who to spend Christmas day with and who to spend Boxing day with and so on....... and uber demanding, and entitled parents and in-laws.
I know someone who I am close to, who went to FIVE different sets of her boyfriend's extended family on Christmas day, (and two different sets of his family on Boxing day...) All within 10 miles but still, she spent Christmas day out from 9.30am to 11pm, and then 11am to 6pm Boxing day.
It was like the film 'four Christmasses' where the couple had to visit his mom and step dad, his dad and stepmom, HER mom and stepdad and HER dad and stepmom. Ridiculous. This woman said Christmas day was the most ridiculously exhausting day, (and Boxing day was not much better!) and last year was the same, and next year will be too.
It's all her husband's family; she has very little of her own - just her parents. (The few extended family they have live abroad, grandparents passed on, no siblings, so just the 3 of them,) But he has a mom and stepdad, a dad and stepmom, 2 grans still alive and 1 grandad, an aunt who hosts a buffet, and an uncle and aunt who host charades and put on 'nibbles,' and a cousin who does a little boxing day 'cocktail party..' etc etc... They have to fit them all in over Christmas day and Boxing day.
So the 2 days are dominated by being dragged around his relatives. Fuck that. I said 'FFS, feign illness next year! Just develop a tummy bug on Christmas eve and quarantine yourself til the 27th!' 'Oh no I can't do that she said, his family would never forgive us and we'd never hear the last of it! Also, it doesn't help that he WANTS to go.' 
Meanwhile her mom and dad (who live 20 miles from them,) don't get to see her and her boyfriend on Christmas day or Boxing day as there is no room for them. Her parents said 2 years back, 'we will just see you Christmas eve morning so you don't have any more pressure heaped on you.' So now she feels super guilty and bad that her tiny little family of just mom and dad feel they have to 'pull away' to enable her and her boyfriend to fit in all of his demanding family.
In addition, I have a good friend whose son's girlfriend's parents invited them to come over for Christmas dinner last Christmas, and they politely declined, because they prefer to be in their own home. (Also, there was going to be about 12 people there who they didn't know.)
They asked this year too, and they declined again. For the first time in the seven years her son and girlfriend have been together, the girlfriend's parents didn't get them a gift or card - even though my friend got one for them. So my friend has a theory that they are miffed to be turned down again. She could be wrong and they may just have forgotten, but it's a bit weird that they got nothing for my friend and her husband. The girlfriend's parents are HUGE social butterflies who don't like people saying 'no' and insist EVERYONE comes over on Christmas day... So the chances are high that they took umbrage.
Upshot is, people should just stay in their own home over Christmas day and Boxing day, stop trying to please everyone else, and just enjoy Christmas with the people who they live with/are very close to...