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.
Room Service staff may be tipped as service is rendered. There are two ways of extending gratuities to the shipboard staff : Automatic Gratuities on Shipboard Account. For our guest's convenience, we automatically add the recommended gratuities to the guest's Sail & Sign account toward the end of the cruise.