Our driver was Dylan, and a more skilled, informative and companiable guide you couldn't imagine. Just like a day out with family really! Our day at Milford Sound was the best day of our two-week South Island trip, and it would not have been possible, given the length of the drive from Queenstown, without Dylan to make it comfortable and enjoyable. It was well-organised and seamless, and certainly did not seem like a 10-hour round trip.
Thoroughly recommended as the way to see Milford Sound! Booking the trip on-line was easy and quick, and everything was provided to make the day very memorable -- including the pesky kea parrots trying to get into the car!