Surely! Here are some travel tips when visiting Surabaya, Trowulan, Blitar, Bondowoso, and Banyuwangi in Indonesia:

Best Time to Visit:
The ideal time to visit these areas is between May and September, during the dry season.

Route and Accessibility:
Start your journey in Surabaya, the capital of East Java, and then make your way to Trowulan, which is about 60km to the southwest. From Trowulan, travel south to Blitar. Next, drive east through beautiful landscapes to Bondowoso, and finally, head southeast to Banyuwangi.

Altitude and Acclimatization:
Most of these areas are at low altitudes, so acclimatization is not typically an issue. However, if you plan to hike in any mountainous areas, such as the Ijen Crater in Banyuwangi, take time to acclimatize and prepare for the higher altitudes.

Accommodation and Booking:
There is a wide range of accommodation options available in these regions, from budget to luxury. Ensure to book in advance, especially during peak season.

Clothing and Essentials:
The weather is relatively hot, so light breathable clothing is recommended. If you're planning to hike, bring appropriate footwear and gear. Sunscreen, hats, and water bottles are also important due to the heat.

Health and Safety:
Stay hydrated, beware of street food, and ensure you're updated on necessary vaccinations. Always take care when crossing roads, as the traffic can be chaotic.

Local Etiquette and Respect:
Ensure to respect the local customs and traditions. When visiting temples or holy places, dress modestly. Indonesian people are typically friendly and helpful, but it's important to respect their ways of life and traditions.