The couple will celebrate together with a joint stag and hen party at a polo match later in the spring, according to friends.
Harry will also jet off for a booze-up with pals at his favourite Swiss bar, La Vache in Verbier, reports the Daily Star .
The venue’s menu of burgers, pizzas, and goulash bowls was partly prepared by celebrity chef Heston Blumenthal.
According to a Verbier source, Harry’s close-protection team have been scouting out the swanky bar, owned by England rugby World Cup winner Lawrence Dallagio, singer James Blunt, superbike legend Carl Fogarty, and restaurateur Rob Sawyer.
“Quite a few of the staff recognised the Royal Protection Officers who skiied with Harry in 2016,” the source told the Daily Star Sunday.
“Once their cover was blown they made a quick exit as few locals started asking if he was coming.”
Prince Andrew has also made his £13m Chalet Helora holiday home available for the bash, with the prince’s friend Guy Pelly also planning a private party at home of “the young, the rich, and the famous” Coco Club.
Meghan is expected to hold a bachelorette party in America.
Harry, 33, and former Suits actress Markle, 36, made their first public outing together at a VIP polo match in Ascot last year.