NCL Casinos at Sea offers comp or discount cruises to players in the Casino. In order to trigger this a degree of onboard casino play is required. Here's an in depth post on the concepts of casino play, comp and THEO regarding the 'actual' cost of a free cruise.

Norwegian Cruise Line debuted the 155,873-GT Norwegian Epic in 2010, the first ship outside of the Oasis class with a double-occupancy capacity of over 4,000, and introduced the 145,655-GT Breakaway class in 2013 and the 165,157–169,116-GT Breakaway-plus class in 2015. At Norwegian Cruise Line Holdings Ltd., our mission is to provide superior cruise vacations for our guests. This mission covers all of our activities including the products and experiences we offer on board our ships, at our destinations, and in our online community through our websites and interactive features, including applications, widgets, blogs, social networks, social network 'tabs. Saga provides free chauffeur service (door-to-door) for passengers who live within 75 mi (120 km) of cruise departure ports, and also shared chauffeur for up to 250 ml (400 km) homeport distances. Alternatives include coach and rail transportation, or domestic flights (from the UK) which can be fare-included. Choose from over 2,000 different cruise slots that will fit the needs of any player. From classic reels to video poker Norwegian Cruise Line is sure to have the slot machine for you Cruise Slots on a Casino Cruise Casinos at Sea from Norwegian Cruise.

Once you are 'in the club' you get 1-2 offers all the time. My current offer (based on very little play) is:
Any 11 day cruise (inside stateroom) other than Hawaii and Nordic Capitals (it is a specific cruise and looks pretty cool). Other EU/Global cruises are valid.
Pricing of a 'free cruise' is as follows: $25 pp day+ port fees+ tips onboard. As my current offer is an inside stateroom I would seek to pay to upgrade. The price quoted to upgrade is as follows:

Norwegian Cruise Casino Coupons

• $320 PP per cruise for Guest 1 and 2) to move to Balcony
• $500 PP per cruise for Guest 1 and 2) to move to Mini Suite

Update: It seems that the above upgrade rates apply to Caribbean and Bermuda... Alaska and EU cruises upgrade at a higher rate.
Therefore the actual cost of a balcony cabin 7 day cruise for 2 people would be:

• $175x2 + 320x2+ port fees = Circa 1K.

Note that the first two elements are somewhat fixed, port fees vary by port and range around $100-200 per person per week. This means that you could get good value when booking cruises like this one:
A challenge we recently faced was adding a baby to the booking. It seemed that we were getting a rate of $175 per adult, but the baby was $600+ fees (which is INSANE!) and today I found out how to avoid those cruises. Note that Casinos at Sea bookings must be made on the telephone, so 'finding space' is a PITA.
3rd pax Free or 3rd Pax 1/2 price
If you do an online search and find this bonus '3rd pax free..' (typically occurs away from school holidays) then you can avoid the 3rd person charge for the baby on a Casinos at Sea booking - basically the bonus stacks. To find it you need to look for the purple cruises, like here:
The easiest way to pull up these cruises is to go to 'advanced search options and check the box for Free':
The above list is for the Getaway from Miami. Example price would be May 16th balcony $1898 (plus $345 port fees) for the three of us.
The Casino at Sea rate would be:

• baby 118..83
• 308 pp (cruise plus port fees)
• upgrade 320x2 to balcony
• upgrade 500x2 to mini suite

Final Price Balcony cabin, NCL Getaway:
NCL website: $2243
Casinos at Sea: $1374

Ncl Casinos At Sea Contact

Ncl Casino Club

Hope that shows the value of the cruise, and also how to find the best ones if you are a parent with an infant. Think of it like award space, Purple = Saver rate Green = Standard rate no color = you are screwed rate.