Holiday to Turkey question

Just take a fee free card. That's all we do now.

Lira. It's their currency.

Nothing more annoying for a street vendor to be offered a £ or €

Pounds, Euros or Lira. They accept all. We always take pounds out with us and exchange when we are there

Lira.

Take some pounds or usd to exchange at a bank if necessary or take a fee free card & withdraw Lira..

You won't win in the shops by paying anything other than Lira or card.

English cash for all the tourist stuff/shops. Lira for cabs and a Revolut/monzo/startling etc card 

Euro is probably most preferred but they generally accept pounds as well.

Take sterling exchange over there into Lira.

Create an account with transferwise app, and request a card only £5 and top up how much that you want in your account and spend from card fees per transaction only 3-5penny and high currency exchange, check that what I am saying and thanks to me later. (edited)

Lira and sterling