What is the last line of this song? Clues below.?

1. This is an appropriate seasonal song
2. Last line has 33 letters not counting spaces or punctuation.
3. First word contains the letter i
4. The person asking me gave this as a clue: "I'll have only one."
5. There are 8 words in the last line
6. The 2nd word of the last line is Christmas
7. The 8th word of the last line is on

For Duke: I have no idea which song it is, let alone what the first line is.

"This Christmas I'll be home with bells on"

Cheers

What is the first line of the song?

pass

i have no idea..

You have issues!

i have no idea a song ending with the word on?