If you don't already follow her on Twitter and subscribe to her email those are good ways to know what she is up to
She's there one or two days during the opening week. Seems like the 2nd operating day she's been there, but you never know.
There are some scheduled dates she'll be there. Look on the website.
She isn't doing the parade in May so doubt she'll be there. Typically there during opening week like the previous person stated.
She typically doesn't announce when she'll be there. You can most likely expect her sometime opening week
There was a list on the website that had the dates she would be there this year.
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