PRINCESS Eugenie and Jack Brooksbank's wedding guests may have bagged an invite to the star-studded ceremony, but there's a strict set of rules they will have to follow tomorrow.
These are the all the things which are strictly banned at the Royal Wedding, from plastic to using the loo after 10am. Gulp.
1. Wee-ly strict
Eugenie is following in her cousin Prince Harry and Meghan Markle's footsteps by marrying in St George's Chapel, Windsor Castle.
And guests won't be able to pop out for a cheeky loo break - as they have been warned there are "limited toilet facilities", according to
The bathrooms are only available between 8am and 10am, an hour before the ceremony begins.
The non-royal guests have to be seated by 10.15am, so it's a long wait until the doors open again at midday.
Plastic fashion may be in right now, but you'll be unlikely to see any at this Royal Wedding.
Eugenie, 28, revealed she was passionate about sustainability when she and sister Beatrice, 30, appeared on the cover of British Vogue in September.
The Queen's grandaughter said: "My whole house is anti-plastic now - and Jack and I want our wedding to be like that as well."
The bride-to-be recently became an ambassador for Project O, an organisation which aims to restore and protect the ocean.
In a recent Instagram post, she wrote: "Together we aim to inspire people to make sustainable choices to stop the ocean from drowning in plastic."
3. No time like the present
Guests have been told not to bring presents to the chapel, but that doesn't mean they're off the hook for buying one.
The couple do have a wedding registry and have asked for gifts to be sent to Eugenie's dad Prince Andrew's office at Buckingham Palace, according to Vanity Fair.
It's in stark contrast to Harry and Meghan - who asked for charity donations instead of presents.
4. Paper trail
Tomorrow's ceremony will have an A-list guest list, with the Beckhams, Clooneys and perhaps even Cindy Crawford and Rande Gerber expected to attend.
Jack, 32, is a brand ambassador for Casamigos Tequila, a company owned by George Clooney and co-founded by Rande.
While Eugenie's celeb pals include models Cara Delevingne and Karlie Kloss, singer Ellie Goulding, James Blunt, Robbie Williams and wife Ayda Field - whose daughter Theodora Williams is a bridesmaid.
But even these famous faces will have to bring two different forms of ID with them tomorrow, according to VF.
Armed with passports and driver's licenses, a flurry of celebs have been told to meet at a farm shop in Windsor to board the minibuses (very glam) which will ferry them to the church.
5. Oh snap!
Social media is strictly banned at the wedding - as is any photography within the castle grounds.
And the couple aren't taking any chances, asking their 850 guests “to surrender mobile telephones, cameras, and any electronic devices used for image capture” before the glam evening reception.
6. Confiscating confetti
Eugenie has also banned confetti from her big day - following in Meghan and Harry's footsteps.
Royal expert Will Geddes told Austalia's that it's nothing to do with security and all about Eugenie's environmental concerns.
He said: "It’s interesting because for Prince William and Kate they did actually have confetti but for Prince Harry and Meghan they didn’t.