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.
If you go to the spa or salon on a cruise ship, check to see if a gratuity is included in your bill. Most often, spa staff aren't included in a ship's auto-tipping program so you should offer a gratuity separately. Cruise Lines with Auto-Tipping Policies. Carnival Cruise Lines: $12 per person per day.