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.
Cruise tipping guide. As the UK cruise market has grown, British passengers have become increasingly familiar with the industryâs long tradition of tipping, but the differing policies of cruise lines mean it is still an area guaranteed to cause confusion, even for seasoned cruise customers.