The video has nearly 300,000 views, 28,000 likes, and 200 comments on TikTok.
One admirer remarked that they "know when and where to show affection for each other," praising their closeness.
Despite their serious reputation, the couple touches and affectionates each other at social gatherings.
Following Queen Elizabeth II's death and William's elevation to Prince of Wales in 2022, they attended more public engagements.
When Charles is crowned king later this year, the couple will attend Trooping the Colour, Royal Ascot, and Wimbledon.