Milford Sound is truly one of the greatest natural wonders of the world. Real Journeys Overnight tour of the sound from beginning to end was simply one of our best and most memorable travel experiences. I cannot recommend it enough. I also recommend the overnight cruise. The cruise vessel, Milford Mariner, sleeps about 60 in single or double cabins. The cabins are a little cramped but very comfortable with an ensuite. Dinner and breakfast were of surprisingly good and plentiful. There is a bar on board to cater for most palettes. The crew were fantastic and the views simply magnificent. Others have said this so much more eleoquent but what I want to say is this. Firstly it rains in the sound every other day on average but weather you might consider inclement simply adds to the magnificence of the Sound for the simple reason during or after rain the subsequent waterfalls have to be seen to be believed. They are simply indescribably beautiful. One tip which I would make is try to go when New Zealand has daylight Savings. Being further south the light last so much longer in the evenings. Another tip, rug up for all four seasons. And a final tip is when booking a cabin do make sure it is as close to the fron of the boat as possible because Cabins at the back are in the range of engine noises. Even when the boat is stopped. I can’t recommend this tour enough.