I think it's hit & miss. In my 30 some NCL cruises, I've never ever had an issue with my small 4" fan that I always pack in my carry on personal bag, until this past January on the Breakaway. Security sent me to a special table and they took it away and said "You can get it back when you get on board" Well, NOT quite the issue, I fought with CS in the Atrium for 4 hours about being a diabetic & medically needed my fan. OMG!!!!! This would have been a deal breaker for me. Finally after 9:30 p.m. that night I got it back. Not a pleasant few hours for me.