We are thinking about a couple of days in CT - In December but wondered if most of the restaurants and shops would be closed down . We would probably stay in Monterosso or Vernazza. Is there anything to do. We’ve been there in the summer but not in the winter.
These past threads related specifically to your question might help you
https://search.ricksteves.com/?utf8=%E2%9C%93&query=Cinque+terre+in+december&button=