I'll admit I'm not paying that much attention to the FL Democrat primary, but it was my understanding that:
  • the Florida Democratic primary has been relegated to a "beauty contest" because the Democratic party stripped the state of its delegates. Thus, Florida Democrats may have little impact on who eventually becomes the Democratic nominee.


But as far as turnout goes, you may be right. At least one source I looked at after reading your post says that the turnout is high, especially for a contest in which no delegates are awarded.

As far as who the lack of delegates benefits, CNN thinks:
  • Without a campaign, who wins? Probably Hillary Clinton, the best-known contender. She will be in Florida Tuesday night to collect her "prize." Which is what? Momentum, she hopes, heading into Super Tuesday on February 5.