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About 850 guests are expected to attend Princess Eugenie and Jack Brooksbank’s nuptials tomorrow, and they’ve already received “an information packet with all the dos and don’ts for the big day,” royal expert Katie Nicholl reports in Vanity Fair.

The biggest rule? No pictures. Photography isn’t allowed inside Windsor Castle, which is where the couple will be saying “I do.” So guests attendees can leave their cameras at home. They also can’t bring hand luggage.

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The couple requested that guests don’t physically bring gifts to the ceremony. While the pair does have a registry, they asked that presents be sent to the Duke of York’s office in Buckingham Palace, according to VF.

The no-photo rule is even stricter for the reception. Guests will be asked to surrender phones, cameras, and “any electronic devices used for image capture” when they arrive, Nicholl writes. The attendees aren’t allowed to take or post images of the ultra-private afterparty, so don’t expect to see any rogue royal party snaps on your timelines.

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Eugenie and Jack aren’t being unusually high-maintenance with their instructions; Prince Harry and Meghan Markle sent out similar directions ahead of their wedding in May.

Cameras and bulky bags were also banned from the ceremony, and guests also had to hand in their phones, cameras, and other photo-capturing devices at the evening reception at Frogmore House, The Telegraph reports. The Duke and Duchess of Sussex also asked their guests not to bring gifts, but instead donate to any of the seven charities they selected.

This article originally appeared on Harper’s Bazaar UK.

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