If you have a dollar balance in your dollar account, cash withdrawals in dollars depend on bank procedures and branch cash availability, especially for larger amounts.
Key points
Call the branch or customer service before you go and ask about advance booking, required documents, or any limits.
Having a balance in your account does not guarantee that every branch will have the same amount of cash available immediately.
The figures, fees and limits in this answer vary by bank and change over time — confirm them with your bank or the official source before acting.