When you get a bonus on Spirit of Christmas, you get a choice of three ghosts = past, present and future. when you have played all 3 ghosts you are automatically awarded 1 Million - I just set it to 1 line pressed auto play until the bonus started, played the bonus then put it back on auto play.
When you'r done with a bonus, it will put a sticker "Achieved" on it.
Once all 3 bonus is played, even at 200$ per spin with only one line, you will get a million!