I know what a coaster is - it's a little mat for your glass to stand on so that it doesn't make a ring on the furniture: not at all scary or dangerous (unless your glass contains absinthe).
The thing in video is a natural selection machine designed to remove mad people from the population
Although I have more or less outgrown roller coasters, I must admit this looks like a lot of fun. Plus a lot longer than any roller coaster ride, so you get your money's worth (unless it costs like a hundred bucks).
The wait must be for forever! I usually only visit amusement parks for special events like Connecticut's Lake Compounce's Haunted Graveyard. I love that place!