Fan camps out 84 hours before royal wedding

Video: Royal wedding down to final details

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   >>> al, thank you. now to our countdown to the royal wedding . just three more days to go. as you can imagine, the planning is down to the final details, but things are changing by the minute. "today" national correspondent natalie morales is at westminster abbey with the latest. good morning.

   >> reporter: good morning, meredith. they are putting up the finishing touches on the scaffolding where the media will camp out friday. there are decorations throughout london . the city is looking beautiful. as you mentioned the one thing that's changing is the forecast. there is a threat of rain for friday. so everyone here is talking about will the first glimpse of kate's wedding dress be covered by an umbrella. after days of sunny skies in london , the weather could soon take a turn for the worse. cloudy skies are in the forecast with showers predicted for the day of the royal wedding . after they are married william and kate are supposed to take an open carriage from westminster abbey to buckingham palace but there is a backup plan. if it rains they will take a glass coach.

   >> rides lady diana .

   >> reporter: the same one used by princess diana when she was married. all over london , security sweeps have begun. on the day of the wedding, 5,000 police officers will take to the streets on foot and on horseback. they will also patrol along the thames and watch from above in helicopters, with live pictures fed to central command .

   >> we'll make sure the security is in place, providinging basically for the reassurance of those in charge of the event on the ground.

   >> reporter: new details are emerging about the ceremony. we learned prince william and kate middleton will enjoy one private moment with their families during this very public event. after their vows the newlyweds will pass through the chapel behind the altar out of the public's view to sign to marriage register in complete privacy. billions are expected to watch the royal wedding on television. and the wedding is getting the x factor , the hip british tv show is lending a top stage manager to oversee the coverage. one fan couldn't wait for the big day . john loffery of south london is already camping out at westminster abbey .

   >> diana will be proud of her son, prince william , and catherine's marriage. prince harry as best man. she'll be with them in spirit in westminster abbey on their special day and always.

   >> reporter: there are now others joining as well, camping out here. we have a lady here who brought her sleeping bag , tent and everything. she's been knitting. she'll need that sweater. the conditions have changed dramatically. officials in london want all to feel they are wedding guests for the day on friday. they are encouraging everyone here to dress for the occasion, hats and all, meredith. i hope you have your hat picked out by now.

   >> i do. they are making it. that lady better knit fast. it's getting colder by the moment.

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