FUEL SUPPLEMENT: Carnival Cruise Lines reserves the right to re-instate the fuel supplement for all guests at up to $9 per person per day for the 1st and 2nd guests and up to $4 per person per day for the 3rd, 4th, 5th guests. Should the price of light sweet crude oil according to the NYMEX (New York Mercantile Exchange Index) increase above $70.00 per barrel.