Antalya Airport has two international terminals (Terminal 1 and Terminal 2) and a separate domestic terminal. Which one you use depends on your airline and flight, not on where you are staying. The terminal is normally printed on your boarding pass or shown in your airline app; if it is not, check the airline's website the day before you fly.
You do not need to know the terminal to meet your driver: because we track your flight, the driver goes to the right arrivals hall. Still, it helps to mention the terminal in your booking if you already know it, especially if you are travelling on a connecting ticket via Istanbul, where you may land at the domestic terminal instead.