All cruises include your stateroom, food and entertainment, but all-inclusive cruises offer even more things free.
Crystal Cruises says that it is "all-inclusive". Gratuities, wine and spirits, bottled water and soft drinks, enrichment talks, fitness services, entertainment, and afternoon tea are included in the price of your fare. Specialty restaurants and the spa are an additional charge.
Cunard Line is a traditional luxury line. Included is dining at the main restaurants, room service, afternoon tea, and live entertainment. For additional fees you can experience the spa, drinks, and specialty restaurants.
Oceania Cruises is close to a real all-inclusive line. Included is wifi, dining in specialty restaurants, soft drinks, bottled water, coffee, room service, and Canyon Ranch SpaClub Terrace. Wine, beer and spirits are an additional charge.
Regent Seven Seas Cruises are true all-inclusive cruises. The fare includes round-trip air, transfers between airport and ship, shore excursions, specialty restaurants, soft drinks, wine, spirits, gratuities, unlimited wi-fi Internet, Canyon Ranch SpaClub, and room service. All accommodations are suites.