But all eyes will be on the couple's children, George aged three and two-year-old Charlotte, who are getting used to travelling overseas having joined their parents in Canada past year for an official trip.
For their parents, the visit to Poland and then to Germany will inevitably be viewed in the context of Brexit. A Kensington Palace spokesman said: "The Duke and Duchess are very much looking forward to this tour and are delighted with the exciting and varied programme that has been put together for it".
It won't have any impact on the negotiations.
It will, the Foreign Office hopes, remind people of the strength of the ties that will endure after the United Kingdom has left the EU.
South Korea offers military, Red Cross talks with DPRK
The two Koreas restarted Cold War-era psychological warfare after the North's fourth nuclear test in January 2016. But he has achieved little progress, with North Korea test-firing a series of newly developed missiles.
It's this mission the royals have pursued in recent months in various European cities.
They will visit the Warsaw Rising Museum, dedicated to the 1944 Polish uprising to liberate Warsaw from German occupation during World War Two. In both countries, William and Kate will meet with survivors of the Holocaust and Nazi oppression.
In March, the Duke and Duchess of Cambridge spent two days in Paris, on their first official visit there as a couple to solidify the relationship between France and the U.K. The trip also marked William's first official visit to the city since his mother, Princess Diana, died in a auto crash there in August 1997.
The race is expected to be one of the key moments of the five-day tour which will include a meeting with German chancellor Angela Merkel, a trip to the Stutthoff concentration camp and a visit led by Lech Walesa to the European Solidarity Movement museum.
William and Kate will take to the waters of the River Neckar to cox opposing rowing teams in a race with crews drawn from Cambridge and Heidelberg.