Shoes matter more than style.
Choose footwear you are comfortable using on repeated stone steps. Smooth soles, unstable sandals or shoes you have never walked in before are unnecessary complications on a historic circuit.
Dress for exposure, not the Old Town streets below.
The Walls sit above the street network with fewer protected sections. In summer, sun exposure is the issue; in cooler months, wind can make the upper circuit feel different from sheltered lanes inside the city.
Carry water from the beginning.
The official visitor rules recommend bringing drinking water. Do not plan the first half of the walk around finding a drink after you are already hot.
A small bag is enough.
You need less than you think: water, phone or camera, sun protection and any personal essentials. Keeping your hands free is useful on stairs and busy sections.
Quick answers
Can I wear sandals on Dubrovnik Walls?
You can, but choose secure footwear with good grip and make sure you are comfortable using it on many stone steps.
Do I need a hat?
In sunny weather, a hat or cap is recommended by the official operator.
Should I bring water?
Yes. The official visitor guidance recommends carrying drinking water.
References: Official City Walls visitor rules & FAQ