Carneval

In these days Italy celebrates Carneval, which looks like the American Halloween.
In Italy we also have Halloween, which is really different from the real American Halloween. Carneval is celebrated by adults and children in a different time of the day; children in the afternoon with floats, adults in the evening at clubs or private party. Once again, in Italy there's another type of Carneval, Venice Carneval, which is the most famous all over the world. A lot of people go there and dress up with polish costumes, like queen or famous historical character.
In Italy Halloween day is celebrated only by adults, who dress as monsters, witches or vampires. There's no nurse, no policeofficer or other amusing costumes.
Last Halloween I went to Dowtown LA and there was amazing. I remember that evening as one of the most incredible experience in my life. There were eccentric costumes, like man dressed as a peacock, and simple funny costumes, like one man dressed as Tom of Myspace.
After that I was thinking about the culture differences. Sometimes, it's very difficult to export specific holidays.