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/Gratuities. Every cruise has suggested amounts for gratuities. You will need to tip your stateroom host, server, assistant server, and head server. Disney suggested the following amounts per person per night. Stateroom Host â $4. Server â $4. Assistant Server â $3. Head Server â $1.