In case the "spoiled kids" part wasn't clear, this lady gets LOUD:

YouTuber Peter Flaaten's description of this video sums it up pretty well:

i snapped this video at the ferry when i suspected a lady in line was getting a little out of line and my intuition was right and this is what happened.

I don't know exactly what she says word-for-word (my ears hurt), but it goes something along the lines of this,

"It's New Year's Eve, for Heaven's sakes! You have no idea, NO IDEA! You have no understanding of people's feelings and what this means!"
Sources: Peter Flaatten on YouTube