If a celebrity wants to use their platform to express their political beliefs that is on them. Chances are it will cost them some fans / customers in the end.
Personally when I had my retail business myself and my business partner always steered clear of politics.
Well, chances are the White Mountains will be white at that time of year... but so will the Greens.
The first or second week in October would be perfect if you have never been to New England during the fall
Tell them to rearrange their schedule.