The security is tight, the excitement building and the guest list exclusive.
But some lucky Irish people have managed to snag a ticket for the Royal Wedding 2.0.
Irish hotelier John Fitzpatrick will dust off his suit tails, and make his way to Windsor Castle today to watch Meghan Markle and Britain's Prince Harry’s exchange vows. Fitzpatrick has been personally invited by Ms Markle to attend the lavish ceremony, and will join the 800 strong royal guest list alongside singer Elton John, Priyanka Chopra, and Victoria and David Beckham.
Fitzpatrick was first introduced to Markle by golfing champion Rory McIlroy - who nominated Markle to take part in the Ice Bucket Challenge in 2014.
Since then he has remained in contact with Meghan, and she often stays at his hotel in Manhattan.
Fitzpatrick flew into London yesterday, and is staying in the same hotel as Markle’s Suits co-stars including Sarah Rafferty, and Rick Hoffman.
“I have known Meghan for a while, and I am very happy to be heading over,” Fitzpatrick said. "I was flattered when I got the invite."
Guests must adhere to a strict royal rules; men must wear dress uniform, consisting of a morning coat or lounge suit, while women are asked to wear a day dress and a hat.
Phones are also prohibited, and guests are not allowed approach the Queen.
What a week it has been for Daniella! Not only was she named Top Youth Volunteer 2018, she has also received an invitation to the royal wedding of Prince Harry & Meghan Markle as a result of her extensive charity work! #SLGpic.twitter.com/aBrBCJ2QED
“I got the letter through the door - it had the fancy royal seal on it so I knew straight away it was important,” he said. “I would have been watching the wedding on TV if I wasn’t going so I am delighted to be part of it.”
Barney is bringing his girlfriend Kirsty, and has been busy prepping – getting suited and booted.
“I got a three piece suit a couple of weeks ago for a friend's wedding - so I'm going to re-use it," he said.
The couple will arrive at Windsor Castle at 9am, along with the other 1,200 members of the public invited.
They will watch the wedding while sitting on a lawn outside Saint George's Chapel, and will leave the ground after the wedding around 2pm.
The palace has advised all the members of the public attending to bring a picnic basket in case they get peckish during the day.
“We’ll have some Prosecco and some sandwiches - nothing too fancy," Barney says."I’m really looking forward to chatting to some of the other people there and hearing how they got the invite.”
Barney is unsure if he will get to shake Harry’s hand after the couple exchange their ‘I Dos’, but their paths may cross later this year when Barney competes in the Invictus Games in Sydney in the fields of archery and rowing.
It’s very much a family affair for Catherine Cooke.
The Derry woman (53) and her daughter Julie-Ann Coll both received invites for their dedication to the charities they work for. Catherine has been working for Foyle Women’s Information Network for 14 years.
Her husband, who will be on a stag do in Krakow that weekend, was "devastated" that he cannot attend. So she will take another daughter Stephanie instead.
Mrs Coll (35) was nominated to attend for her work with child bereavement support group Life After Loss, having lost her son Mark in 2004 at 22 weeks old. She will be accompanied by her mother-in-law Marcia Coll.To mark the occasion, Catherine Cooke got a dress and hat specially made by Fashion and Textile Design Centre in Derry.
The dress was made within a three week window, and is decorated with a city-scape of Derry includes Derry's walls and the Guildhall.
“I couldn’t believe myself and Julie-Ann were both invited - it’s a real family day out for us,” Catherine said.
Over 100,000 people from around the world are in Berkshire for the wedding, and there are predictions that even more people will watch Meghan and Harry’s wedding than Britain’s Prince William and Kate’s wedding in 2011.