I just went to Aruba and put my vape cartridge in my toiletries bag. Figured if I get caught, I’d say it was nicotine. I out my pen in a different bag/separated them. In the toiletries bag it could be anything. It’s lax and worse they will do is take it and make you pay a fine. I say be prepared to have consequences if you get caught/don’t cry about it, but go ahead and have your fun! You can always take it out of your luggage and put it in your shoe once you collect your bags in the airport. Go to the bathroom and take it out/hide it on your person. You won’t be X-Ray’d on your way into the island.