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 personnel are the staff with direct contact with the guests who pay them tips. There are specified amounts of tips per particular positions which are advised to guests prior to embarkation and which vary from one cruise line to another.Such personnel are waiters, busboys /assistant waiters, bar waiters/waitresses, bartenders, cocktail waitresses, etc. Tipping personnel have a small base salary.alaries earned onboard cruise ships are not subject to income tax. However, citizens of some countries are eligible to tax all their income earned abroad. Read more about tax free income of cruise line employees.