Bluebridge Cook Strait Ferry - Wellington to Picton - New Zealand

Bluebrige offers a ferry service between Wellington and Picton and vice versa. The passenger terminals in Wellington and Picton are centrally located and easy to get to.
Cook Strait (Māori: Te Moana-o-Raukawa) separates the North and South Islands of New Zealand. The strait connects the Tasman Sea on the northwest with the South Pacific Ocean on the southeast. It is 22 kilometres (14 mi) wide at its narrowest point, and is considered one of the most dangerous and unpredictable waters in the world. Regular ferry services run across the strait between Picton and Wellington.
The strait is named after James Cook, the first European commander to sail through it, in 1770. In Māori it is named Te Moana-o-Raukawa, which means The Sea of Raukawa. Raukaua is a type of woody shrub native to New Zealand.
Wellington To Picton ferry
Departure Location: Wellington
Monday-Sunday
Time: 02:00
Time: 08:15
Time: 13:15
Time: 20:30
Picton to Wellington
Departure Location: Picton
Monday-Sunday
Time: 02:30
Time: 07:45
Time: 14:00
Time: 19:15
Luggage Information
Luggage Weight Limit: No single bag may weigh more than 30kg or 66lbs
Maximum 2 checked-in bags allowed per person, plus a small handbag to take on board
Luggage inside a vehicle does not require to check-in, as long as the luggage fit inside the vehicle
Eligibility
Children aged 0-15 must be accompanied by a paying adult
Children aged 0-2 can travel free of charge
Children aged 17+ will be charged the same rate as adults
Charges:
Adult - NZ$ 75 (one way) or 150 with return fare.

[@kenbaird7067]

If BlueBridge can do this, why can't NZ Rail do the same. Congratulations, BlueBridge.