In some countries, some people avoid using "Merry Christmas" and instead say Happy Holidays:
Thought by some to be a politically correct alternative to Merry Christmas and/or Happy New Year when greeting people in public places due to concern over those who might not celebrate Christmas.
(I'm not sure who'd be offended by Happy New Year - people who don't use a Gregorian calendar?)
Is it safe to use メリークリスマス? If not, are there "politically correct" alternatives?
Searching jisho.org for season's did get some results literally translating as season's greetings, but I expect phrases written in kanji aren't likely to be politically correct euphemisms for "Merry Christmas".