Crystal River Cruises announced the complete 2021 deployment for its five-ship fleet, giving travelers nearly three years to plan their vacations.

The line is offering early booking incentives of up to $2,000 off with lowest-price guarantees on its luxury ships that will sail the Danube, Rhine, Main and Moselle rivers on itineraries of seven to 16 days.

Walter Littlejohn, Crystal River Cruises' vice president and managing director, said the line is seeing greater demand by customers to book early.

"Not only does this advance ability to plan help ensure that our guests enjoy their Crystal River Experience precisely the way they wish, but our Book Now Savings adds more incentive to book early, guaranteeing the best fares for guests who plan ahead," he said.

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