During this season too, men of goodwill help the needy and show love to their neighbours too by sharing both money, foods and materials of different kinds. This has led many bitcoin investors to always sell several portions (or all) of their bitcoin to raise fiat for all the expensive plans. This has led to several sales in fiat below the original cost per bitcoin that such investor is having because he needs to attend to his family responsibilities first.
You don't refer to these set of people as investors. If you're buying bitcoin just to sell during Christmas for your expensive plan, then I'm sorry to say you're just wasting your time. Christmas is annual event and you can not buy and sell Bitcoin within this short period and realise reasonable profit. If your plan is to save for Christmas events and expenses, you should better do that in FIAT. You might end up with significant loss if the crypto market is not healthy during the event period as it is now and you'll probably find it difficult to get everything you planned done due to shortage of money. And by the way, it doesn't make sense selling off your entire investment just to celebrate Christmas. There are more Christmas to come and you can celebrate it anyhow you want it if you allow your investment to yield good profits and sell at appropriate price other succumb to peer pressure and sell prematurely to throw unnecessary party.