The return is the ride that gets missed. A late lobby exit eats the check-in window. The pickup at a Pamukkale hotel is therefore set by working backwards from the flight. Domestic and international departures do not need the same margin.
When to leave
The road is about 60 kilometres and usually 50 to 70 minutes in light traffic. Add the walk to the lobby, the luggage and a margin at the airport. A night departure is quieter, and it still needs that margin.
Hotel name, flight number and passenger count are enough. If several rooms are leaving, say how many. The driver meets you in the lobby.