Benenden School, where both Princess Anne and actress Rachel Weisz studied, is in nearby Tunbridge Wells.
Princess Anne was given a tour of their new home, which they moved into in October.
The restrictions are also in place at Princess Anne Hospital and Countess Mountbatten House hospice.
Princess Anne told the families she hoped they would find "beauty, tranquillity and space" in the garden.
BBC: NEWS | UK | England | London | Garden memorial to 9/11 victims
Princess Anne said it was "a privilege and a pleasure" to be presenting medals to the regiment.
Princess Anne was given a guided tour of Mondula, Toto and Estrella's new habitat at Blair Drummond Safari Park.
Oaksey House was opened in 2009 by Princess Anne, who remains a patron.
Phillips chose a cathedral-length bouffant veil held in place by a Greek Key tiara lent by her mother, Princess Anne.
On a visit to Cumbria, Princess Anne cut the ribbon across the new Northside Bridge and met PC Barker's widow Hazel.
Prince Charles was embarking on a military career, Princess Anne, an acclaimed horsewoman, was married -- drawing huge crowds of well wishers.
CNN: Elizabeth II: Young queen who grew into a modern monarch
Speaking at the ceremony Princess Anne paid tribute to the residents and said the community had come together in a most extraordinary way.
BBC: Wootton Bassett given Royal prefix by the Princess Royal
Princess Anne met Mrs Barker and her four children next to a memorial to her late husband - a stone replica of his badge.
Princess Anne will visit Northumberlandia on Monday to officially declare the site open, although the public will not be able to see it for themselves until Wednesday.
It is not always the Queen that performs these ceremonies: today it was the Princess Royal handing out the honours for example (you might know her better as Princess Anne).
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