I asked dancesafe.org this question and they were actually not very helpful. I am guessing that they do not want any responsibility should anyone get in trouble. I guess the question is are they flammable and are they considered paraphernalia?
Ya, that won't work for a cruise though. You could ship one to the hotel, but not for the cruise. I know at the end of the day you probably would not get arrested for it, but I am not trying to miss my cruise either though.
I don't really think you're going to find anyone selling drugs on a cruise line either lol... people tend to bring just enough for themselves on those occasions
I took 4 test kits to CounterPoint Music Festival last September. I drove them across the Canadian/American border I then boarded a plane with them in Seattle and flew across the country. I had them in my toiletries bag just so it looked like some kind of face wash or something like that in the xray scan, I had no issues and avoided taking a mix of methylone and meth.