They'll visit Dublin, Kildare, Meath and Galway.
Britain's Duke and Duchess of Cambridge will begin their first official trip to Ireland later.
Rolling road closures will be in effect over the next three days across parts of Dublin, Kildare, Meath and Galway for the royal visit.
Today, William and Kate will travel to sites in Dublin including the Guinness Store House, and meet President Michael D Higgins.
Midlands royal fan, Michelle Dunican from Abbeyleix, has met Princess Diana 37 times.
While she's looking forward to the Cambridges' arrival, she doesn't think it'll have much of an impact on Irish people or our relations with Britain:
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