For me, holidays didn't affect bitcoin value or market. In my opinion, it still depends on a user of bitcoins on how they will use it and how many time did they sell or buy it how many users are still using bitcoin until now. It always depends on us that the market will depend on.
Last year there was some fall in BTC prices before Christmas. This was because people were cashing out their BTC or taking out their profits, may be to enjoy their Christmas holidays.
Yeah there are some who are encashing their bitcoin but it doesn't mean that holidays will affect the bitcoin, it will always depend on us "users" of bitcoin or other cryptocurrencies but not all of bitcoin users doing this. Some of us yes but it will not affect the bitcoin. BIG investors will affect the price of bitcoin and that is why bitcoin price falls down last year is it because who invested big amount in bitcoin and when bitcoin hits new ATH's they encash it to get their profit.