Ah yes, when I think 'festive', I think the occult...well, actually, I do.
Most Christians are under the impression that the USA is a Christian country. It is not. It is a country, of the people, by the people, and for the people. If the populace is majority Christian, the USA is a Christian country in a de facto sense. However, if satanism takes hold (or any other ideology, for that matter), the USA becomes a satanic country. satanism Is all around us. Remember reading a story of a converted satanist...he was drinking blood and doing rituals all while serving as a deacon in a local church. Christians are...not following Christ's advice concerning being as wise as snakes...
As for holidays, the history and purpose of the majority of them is awful. I don't even celebrate my birthday. Every day is a celebration and every Sabbath a holiday.