Great to hear good reports on this service. Trying to decide whether it's more useful for arrival or departure. In October afyer the holidays. Arrival is 5pm on a Sat from JFK. Departure is 7am BA to London on a sunday morning . I'm trying to understand all the options. You can use the tetminal only or also book transportation to the terminal? One of the posters indicated they booked a driver through someone else ..can they share who?