Fitting three or four passengers into one cabin can be an economical way to sail, or a necessity for parents with small children. Today only, you can get discounted rates for third and fourth passengers on select Carnival sailings. Prices start at $149 per person for the third or fourth guest in a single cabin.
The promotion is, of course, loaded with restrictions. You must book a cabin in categories IS through 8E; categories 1A, 11, and 12 are not eligible for discounted rates. Carnival Liberty and Europe sailings are also excluded from the sale.
The third/fourth passenger rates are available on supersaver bookings through December 15 and cruise-only guarantee bookings on select fall sailings. You must request fare code CPWS for supersaver bookings and CPWD for cruise-only guarantee bookings.
If you can manage to book the $149 rate, you might want to consider using the money you’ve saved to reserve a bigger cabin. It’s tough fitting four people in the smallest inside cabin. I know because I’ve done it, and the shortest person in my family is 5’9″.