Hello! That sounds like an exciting trip. Japan is a country rich in history, culture and innovation. Here are some tips for your travel to Tokyo, Kyoto and Osaka.

Best Time to Visit:
The best time to visit Japan would be in either Spring (March to May) or Autumn (September to November). These seasons offer mild temperatures and the stunning spectacles of cherry blossoms and autumn leaves. Avoid Golden Week (late April to early May) as most of Japan is on holiday and places can get crowded.

Route and Accessibility:
Japan's transportation network is excellent; you can easily reach these cities by Shinkansen (bullet train). From Tokyo to Kyoto, it takes about 2-3 hours and from Kyoto to Osaka, it's just a 15-minute Shinkansen ride. English signs are common in the cities and inside trains.

Accommodation and Booking:
There is a wide range of accommodation options available in all these cities. From traditional Ryokan inns to modern hotels and affordable guesthouses. Booking online in advance is advisable. Make sure to have your booking confirmations accessible as you travel.

Clothing and Essentials:
Depending on the season, you will want to dress accordingly. During spring and fall, light clothing with a few warm layers would be suitable. If you go during winter, pack warm clothes. A comfortable pair of walking shoes is essential as you will likely be doing a lot of walking. Don't forget to pack a power adapter; Japan uses Type A and B outlets.

Health and Safety:
Japan is generally a safe country with low crime rates. However, it's always advisable to have travel insurance for emergencies. Japan is also very clean and hygienic. Over the counter medications can be easily found at pharmacies.

Local Etiquette and Respect:
Japanese culture values respect and courtesy. It's common to bow when greeting people. In public places, try to avoid loud conversations and keep your phone on silent. When using chopsticks, don't stick them vertically into your rice as this is associated with funerals.