Loading...Take some cash with you in Euros and go to a currency exchange office there. Be careful when choosing one because exchange rates vary from one place to another.
If you pay in cash, many places will offer discounts.
I don’t know if it’s the same for you, but my phone operator divides Istanbul into two parts: one European and the other Asian, so ask how it's work with your phone operator first to not have a massive bill.
At worst, you have WiFi at all the bars if needed.
If you want to take the boat, you have options like the tourist version, where you can do a mini-cruise that will tour the bay and last 2-3 hours. You can feed animals and all, but you also have the ferry that takes you from the European side to the Asian side, and you will have just as many great views but for cheap