Can you drink at 18 on Norwegian Cruise Line? The answer depends on your itinerary and the applicable alcohol policy. Under the Norwegian Cruise Line drinking age rules, guests aged 18–20 may qualify to purchase and consume beer or wine in international waters on certain itineraries if an accompanying parent or legal guardian signs the required waiver. Alaska and Hawaii sailings have stricter restrictions, and other destinations may follow different rules. Review the official policy before sailing or call 888-653-0010 for general guidance about Norwegian Cruise Line drinking age requirements.