If the holiday could really affect the price, than the bitcoin has to raise. Similar to gasoline at the first day of holiday.
It will rise surely by Holiday, we might have a Christmas give, since Im planning to put my 13th month on btc, i think it was not only me whose planning it, more newbies might start on December too. to start there savings.
I think no, bitcoin will not drop during the upcoming holidays. Bitcoin will stay still, based on the price history of bitcoin, I don't think so. People would probably be selling some for the holidays, but expect some to buy too due to Christmas bonuses and such. If it were to rise or drop in price though, I believe it wouldn't be even a bit significant. Unless we receive new FUD on December though.