Technically, no. However, we have a small travel steamer we bought at Walmart many years ago and take that with us on every cruise. We've never had any problems whatsoever in over 40 cruises with it. Worse case scenario, they'll find it and tell you to come down to remove it from your luggage, but they'll usually give it back when you depart the ship. At least that's what RCCL did when we forgot to leave our dive knives at home and they found them when they did an x-ray on our dive gear.
Travel Agent/Cruise Specialist w/13 yrs exp and 48 Cruises on 11 cruise lines! Favorites: Paul Gauguin - Tahiti: Uniworld River Cruises - Europe; Celebrity Solstice-class ships; Holland America - 12-nights Baltics & Russia; RCCL - 14-nights Greek Isles, Turkey, & Croatia; Holland America - 14-day Alaskan cruisetour; 10-night Canada/New England cruise; 21 days Hawaii w/7-night NCL cruise; Oceania - 25 days in Asia; more than 3 months touring Europe by train. And many all-inclusive resorts!