Greg Rules uses his seven-day rail pass to travel from Tokyo to Kyoto, Osaka, Hiroshima and to the Hakone mountains and lakes district before returning to Tokyo.
Tokyo Railway Station - where even the donuts are better.
My iced donut at La Terre café at Tokyo station was filled with a sweet-potato-like paste and topped with two small green leaves.
It was delicious and almost made up for the watery coffee.
Both the donuts and the rail system in Tokyo are as close to faultless as the Japanese can make them.
If Tokyo's underground and loop system is not the most efficient in the world, I'd like to know what city's is.
As myriad lines lead to scattered sites, it becomes apparent it is easier to navigate the sprawling city from station platforms and underground tracks than through its streets.
The ubiquitous rail maps, a pull-out copy of which is included in the latest Lonely Planet Japan, may look like a game of snakes and ladders gone crazy but it's a simple matter of following the colours and numbers and letters codes to get anywhere in Tokyo in a snap.
The Shibuya fashion district is station Z01 on the mauve Hanzomon line; the retail, park and temple area of Ueno is G16 on the grey Hibiya line and the Tsukiji Fish Market is E18 on the pinky/red Oedo line.
Working out fares is just as easy. The ticket machines have English options, the fares are only a couple of dollars and if your ticket cost doesn't cover your journey price, simply pay the difference with a fare adjustment machine or to the ever-courteous turnstile staff.
This is a country where the warning signs not to jam one's fingers in carriage doors are accompanied by a picture of a worried panda.
But the Tokyo network takes a back seat to Japan's Shinkansen intercity bullet trains and, thanks to JR Group and its Japan Rail Pass, overseas tourists can travel on them for a fraction of the full fare cost.
I activated the pass at Ueno station where the smiling young staffer, whose excellent English was helped along by 18 months on Australia's Gold Coast, reserved my seats and suggested my route.
Shinkansen onboard crews dress like flight attendants, and so they should. With maximum speeds of 300 km/h, the trains look and go like rockets.
Inside, it's all plush. The people next to me have slipped off their shoes and are sipping beers and nibbling nuts. A woman pushing a cart is offering, cakes, sweets, coffee and ice-cream for the journey.
Each time the beige-uniformed conductor leaves a cabin, he turns and solemnly bows.
The trains have western and Japanese-style toilets, vending machines, public phones and smoking rooms. Each seat has a normal and braille sign noting its row and number.
The Shinkansen from Osaka to Hiroshima was like flying first-class. Each huge pop-back seat had a wide, individual arm rest, pop-down table, pop-up drink holder and pop-out jacket hook. This is economy class, not the slightly more expensive first class green section.
From Tokyo to Kyoto took about two hours, 45 minutes; from Kyoto to Osaka, about 15 minutes; from Osaka to Hiroshima, one-and-a-half hours, and from Hiroshima to Odawara in the Hakone area behind Tokyo, a bit more than two hours.
Along the journey, I bowed at Kyoto temples, was shouted sushi, udon noodles and beer at an izakaya-style restaurant in Osaka by a grinning Japanese gentleman, who did not speak English, and queued with Japanese school children in Hiroshima to see the watch that stopped at 8.15am, 6 August, 1945, when the Enola Gay dropped its atomic payload.
I boarded a bus, train, cable car, ropeway gondola and a boat decked out as a pirate ship in search of a glimpse of Mount Fuji, but alas Fujisan was shrouded in cloud that day. (The Hakone free pass, costing about ¥4400, about NZ$68, allows unlimited use of the local transport for three days. You can pick one up at Odawara station.)
Back in Tokyo, I wandered among the weird fashionistas and outrageous clothes shops of Harajuku district, confident that around every corner there was a delicious donut and a clean, fast and always on-time train.
THE JAPAN RAIL PASS
Japan Rail Passes are available only to foreigners visiting Japan and must be purchased outside Japan.
Each of five Japan Rail Passes covers a different area, with a separate pass to cover the entire country.
The passes are valid for seven, 14 or 21 days.
The cost of adult economy-class passes for travel throughout the country are $425 for seven days, $679 for 14 days and $868 for 21 days.
They can be bought online at jrpass.com.
Once purchased, the traveller will be issued with an exchange order document, which can be swapped for a rail pass at most major train stations in Japan.
JAPAN'S SHINKANSEN BULLET TRAINS
Major cities on Japan's main islands of Honshu and Kyushu are connected by the Shinkansen train system operated by four Japan Railways Group companies.
The trains reach speeds of up to 300 km/h and are famed for their punctuality, with most trains departing on time to the second. There have been no fatalities in a Shinkansen train accident.
The Tokaido Shinkansen between Tokyo and Osaka is the world's busiest high-speed rail line, carrying more than 150 million passengers each year.
Up to 13 trains each hour run on the Tokaido line, with a total carrying capacity of more than 1300 seats.
Japan was the first country in the world to have dedicated rail lines for high speed travel.