Cruises offer great value for your vacation because the fares include nearly everything you'll need  :-

1) Meals - Breakfast, Lunch, Dinner  (ala carte or buffet) 

2) A few types of nonalcoholic beverages - coffee, tea, non-bottled water, lemonade and ice tea, for example

3) Accommodations  - cabin

4) Entertainment - varies from one cruise line to the next, but you’ll typically get free admission to Broadway-style theater productions and comedy shows. Live music can be found in many onboard venues and listening is free

5) Events - varies from one cruise line to the next, but check out your daily cruise program for complimentary cooking demonstrations, lectures and craft classes. In the evenings, it’s always free to dance the night away in the disco or show off your singing skills at a karaoke session.

6) The gym, pool and kids club - Your cruise fare also typically includes complimentary access to onboard fitness centers (though some group and private classes may have a fee), pools and kids programming. The perks, of course, depend on what cruise line and ship you’re sailing with.

7) Activities - Trivia, pool games, big-screen movies, dance classes and sports deck activities -such as basketball, rock climbing, mini-golf, ropes courses and shuffleboard -- are all normally free on a cruise ship. Included enrichment on a ship typically spans sessions on shopping tips, computer use and photography, cooking demos and port lectures depending on what cruise line and ship you’re sailing with.