Kate Middleton and Prince William may have rules for their behavior [1] in public, but even they can't say no to a cold beer every once in a while. During their tour of Germany [2] on Thursday, the pair took a breather from their official duties [3] to open a barrel of beer following a rowing race between the twinned towns of Cambridge and Heidelberg. The duo ditched their formal attire for the outing by donning casual clothes and sneakers as they toasted with their huge mugs. While we love seeing their precious family moments [4] with Prince George and Princess Charlotte during this trip, we're also enjoying seeing them kick back and relax [5].