In 2026, you can navigate most of Dubrovnik using only a credit or debit card, but carrying a small amount of cash is still highly recommended for a "frictionless" experience. While the city's restaurants, hotels, and major attractions (like the City Walls) all accept contactless payments and major cards, smaller vendors in the Old Town still prefer cash. You will likely need "Euro" coins or small notes for things like public restrooms, small gelato stalls, local markets (like the one in Gundulić Square), and tipping for free walking tours. Additionally, while the "Libertas" buses accept card payments on some routes, having cash on hand is often faster for purchasing tickets directly from the driver. Since Croatia fully adopted the Euro (€) in 2023, you no longer need to worry about the Kuna. A good rule of thumb for 2026 is to carry about €30–€50 in small denominations as a "backup" for your daily needs, while relying on your card for all your larger holiday expenses and dining.