No, dab pens and all cannabis products (including CBD gummies and medical marijuana) are strictly prohibited on almost all major cruise lines in 2026. This policy remains firm because cruise ships operate under federal and international maritime laws, regardless of whether the ship departs from a "legal" state like California or New York. If caught during terminal security screenings (which now frequently use advanced AI and K-9 units for narcotics), the items will be confiscated, and you may be denied boarding without a refund. If found in your cabin, you face heavy fines (often $500+), immediate disembarkation at the next port at your own expense, and a lifetime ban from the cruise line. Even if you have a valid medical prescription, cruise lines do not make exceptions, as the ship must comply with the laws of every international port it visits.