Not a Fins fan but, will be there week 17/16 (whatever it is) for the Pats game
DUDE! You're gunna love it during that time of the year. It's gunna be "Miami cold," which is basically 50s - upper 60s, lower 70s (in Fahrenheit... the equivalent of 10-21 degrees Centigrade). The stadium has been renovated, so you are going to get a nice new(ish) stadium experience. Next year is when the renovations will be completed, so you won't get the full feel of a renovated stadium, but it will be cool enough. ENJOY! There are also a few pubs (far from the stadium, though) that welcome Evertonians. Boca and Miami Beach come to mind with those.
Boca and Miami Beach are pretty much on opposite ends of town, but depending on where you are staying you can hit up Lion and Eagle in Boca (the official South Florida Evertonian pub), or Playwright's Irish Pub in Miami Beach. Fado's in Brickell and Elwood's in Downtown welcome EPL fans, although the owner of Elwood's is from London and is an obnoxious Arsenal fan. At least that's what I've been told. And he messes with supporters of other clubs. Still fun, though.