Credit cards are widely accepted in Indonesia, especially in tourist areas, major cities, and upscale establishments. You can use credit cards like Visa, Mastercard, American Express, and JCB at:

1. Restaurants and cafes

2. Hotels and resorts

3. Department stores and shopping malls

4. Tourist attractions and museums

5. Travel agencies and tour operators

However, cash is still the preferred payment method in:

1. Local markets and traditional shops

2. Small food stalls and street vendors

3. Rural areas and villages

4. Some budget-friendly accommodations

It's always a good idea to have some local currency, Indonesian Rupiah (IDR), for small purchases and transactions. Additionally, inform your bank or credit card issuer of your travel plans, so they don't flag your transactions as suspicious.