I guess there's a nice "fuck you" factor, but it's unlikely that you'll see any benefit from the extra tax.
In theory the community is already benefiting from tourist dollars.
You could hope it would price people out of traveling, but honestly it will probably just skew the demographic to be richer.
She's going for that undecided vote. She figures everyone that fears Trump will vote for her regardless (not an outrageous idea) so she needs to secure all the right-leaning individuals that know trump is a psychopath.
Politicians gonna politics.