Pets OK, but must return clean and undamaged.
No off-roading except for beach driving where legal :) - Like at my beach house in Crescent Beach, FL. You can rent it too, search VRBO for "Pelican Beach".
Must be returned clean and re-fueled to the same level.
Trailer towing may be allowed, but must discuss specifics and your experience level.
Florida SunPass (Toll Pass) included, but users will be charged for any tolls used. Note there are currently very few toll roads near Jacksonville, but a toll-only lane is opening soon on 295.