Sure, Here are some travel tips that can enhance your visit to Hiroshima, Okayama, and Tottori:

Best Time to Visit:
The best time to visit these Japanese cities is during spring (March-May) for cherry blossom season, and autumn (September-November) for the fall colors. The weather during these periods is typically mild and pleasant.

Route and Accessibility:
The cities are easily accessible via Japan's well-connected train network. From Tokyo, you can take a Shinkansen (bullet train) to Hiroshima, then local trains to Okayama and Tottori.

Altitude and Acclimatization:
The cities are at low altitude so acclimatization is not typically an issue. However, if you plan to do any mountain hiking, take your time to adjust.

Accommodation and Booking:
Accommodations range from budget hostels to luxury hotels. It's advisable to book in advance, especially during peak travel seasons.

Clothing and Essentials:
Pack layers as the temperature may vary. Comfortable walking shoes are a must as you'll likely do lots of walking and hiking. Don't forget a good-quality camera to capture the beautiful scenery.

Health and Safety:
Japanese cities are very safe. Still, it's recommended to have travel insurance, which covers healthcare. Carry any necessary personal medication and keep emergency contact numbers at hand.

Local Etiquette and Respect:
Japanese people are polite and respectful. Be sure to observe local customs - for example, it's customary to bow when greeting. In public places, keep your voice low and avoid talking on your cell phone. As in many other countries, tipping is not customary in Japan.