Mila Kunis & Ashton Kutcher Hang with Princess Beatrice in London
05/14/2013 AT 10:00 AM EDT
The former That '70s Show costars toured a string of bars with the young royal and her boyfriend, Dave Clark, in London on Saturday.
The foursome visited the Calloh Callay bar in the trendy Shoreditch neighborhood, where a source told PEOPLE, "They sat in our upstairs Mexican bar on barstools. They drank Jose Cuervo shots and cocktails."
The source adds, "[They] were lovely customers, friendly and not at all demanding."
A weekend in London is nothing out of the ordinary for Kunis and Kutcher, who have been traveling the world together. Just last week, the couple visited a winery in Spain and prior to that, they toured Bruges, Belgium.
– Phil Boucher