When to Use Cash Liras
Although some large travel expenses such as hotel rooms and car rentals may be denominated in US dollars or euros, they may also be denominated and paid in Turkish liras.
Some establishments offer discounts for payment in cash (because then they need not pay a percentage to the credit card company).
When paying with foreign currencies, euros are most readily accepted, US dollars are good, UK pounds sterling are accepted in some places, but no Scottish notes! Other currencies should be exchanged at currency exchange offices