Six countries produce nearly 60 percent of global carbon dioxide emissions. China and the United States combine for more than two-fifths. The planet's future will be shaped by what these top carbon polluters do about the heat-trapping gases blamed for global warming. How they rank, what they're doing:
Viking River Cruises Tipping Policy. It is customary to give cruise gratuities, subject to your satisfaction of services rendered. Gratuities on board and on land are not included in your full fare.
Tipping Policies for the Major Cruise Lines. Carnival Cruise Lines â Carnival adds a tip of $11.50 per day, per guest for crewmember services, other than bartenders. The full amount is added to onboard accounts on the second day of the cruise.