We're wondering if there is a good place to stop between FLL and through the Keys to ship fruit back home to the family who didn't get to Florida for some sunshine?

do you mean to ship it yourself? There are lots of rules/regs.

http://tinyurl.com/cu9qnk

No - I don't want to ship it. I want to see it, decide what goes in the box, and have them ship it.

www.robertishere.com
Robert is Here fruit stand. It's at Florida City. Leaving the Keys, turn left at the last traffic light (there's a Shell gas station on the near right corner). You'll see RIH.
Be sure to treat yourself to a fruit milkshake! You won't be able to ship that... If you drive just a few miles further, you'll be in Everglades National Park and one of my favorite places- Anhinga Trail.
You are coming soon, yes? RIH closes for a few weeks in late summer.

Another vote for Roberts. It is a great place to stop and they have a huge variety of products to ship including several that will be hard to find elsewhere.

The website listed has more detailed directions and a handy map. Enjoy.