Without the pressure of having to wear the crown, they can enjoy the perks of being a senior royal without the same fanfare, which includes VIP holidays with Hollywood types.
The Queen will host a wedding reception at Windsor Castle for the couple and their guests.
While Britain's ITV channel will be covering the wedding live on TV, the broadcast will not be available in South Africa.
The children of the Earl and Countess of Wessex, 14-year-old Lady Louise Mountbatten-Windsor, and 10-year-old Viscount Severn, will take on the role of special attendants.
The couple will then take a short carriage trip through Windsor, echoing that of Harry and Meghan when huge crowds turned out to watch.
Princess Eugenie, the younger daughter of Prince Andrew and Sarah Ferguson, is set to Wednesday Jack Brooksbank in a two-day extravaganza, marking another highly-anticipated union to take place at St George's Chapel at Windsor Castle.
It now seems like another royal has made prior commitments, as it has been announced that Prince Edward will also miss part of the celebrations.
Eugenie was spotted strolling around London earlier this week in a purple coat dress which beautifully complimented the new hue, as well as showing off her slim legs.
George, 5, will be a page boy in the bridal party, and three-year-old Charlotte will be one of six bridesmaids. The couple were engaged in February after seven years of dating.
The tipples are a stark contrast to the Pol Roger champagne that was served at Prince Harry and Meghan's royal wedding in May, although we're sure champagne and wine will also be on offer for guests to raise a toast to the newlyweds.
Channel24, South Africa's largest entertainment website, will be providing live updates as the royal wedding day unfolds.
The group says Eugenie does not carry out royal duties and that weddings are personal, private occasions, not affairs of state.