We have used Welcome Pickups on three occasions. Each time we were very satisfied with the service. They met us with a sign with our name on it -- twice at the airport and once at Piraeus Port. I like that they will track the flight so we do not have to worry if the flight is delayed. I would definitely use the service that provides a sim card, ready to use once you connect with them. I am also impressed with the 2-hour and 1/2 day tour. -- very helpful if you have a long layover. We have recommended this for friends who are coming to meet us on an island and have several hours to wait before the ferry. I also like the Customer Service. They send timely messages and alert you of their status (when driver is there, waiting, etc). Also, they seem interested in my opinion. Good luck to them.