NO! the only holiday that figures in the story is Halloween, E.T. goes as himself in a Halloween procession of trick-or-treaters. Whole story takes place in suburban California, not the most ( Christmassy) landscape.
The Quiet Man
It means The Christmas tree and The manger (nativity scene)
The love scene that he watches on television is from the movie "The Quiet Man" (1952), which is about a disgraced American boxer who retires to Ireland, where he finds love.
The Christmas Pageant
Romania
Yes there is. Beauty and the Beast:The Enchanted Christmas (1997)
The flower that was in the movie ET.
"Away in a Manger" is one of the Christmas songs that depict the nativity scene.
The scene in question is the final scene of the movie, not just another scene.
nativity scene
ET stood for Extra-Terrestrial in the movie ET.
a nativity scene