if you do a search, you can find all kind of info on this subject from previous threads, but to quickly answer your question, you are not allowed to bringt it on, but if you want to, putting it in your checked baggage is usually the way to go.
Victory, here I come!! - October 2, 2004
they didn't confiscate our bottles in cozumel.... on the glory last week april24- may 1 there was a long line where they were confiscating- we didn't feel like waiting so we just went to our cabin. we didn't buy it for the cabin.... they weren't policing it very close. and they did x ray our bags. there was just a long line. i didn't feel like waiting in!!!!! again