Take a piknk sailing!

https://travelwithmia.com/piknik-dubrovnik-the-ultimate-picnic-experience/

A fabulous combination of course. The past two years piknik has sent numerous sailing picnics out with SAILING DUBROVNIK - http://www.dubrovnik-sailing.com/index_EN.html

Great skippers, and a lovely way to get out on the sea and your piknik comes with everything you will need. Delivery to the boat is possible if you are not staying in the Old Town.