Absolutely! Here are some travel tips that will come in handy when you visit these spiritual and historic cities of India:

Best Time to Visit:
The best time to visit Ayodhya, Varanasi, and Lucknow is during the cooler months of October to March. It is also when several cultural and religious festivals are celebrated, offering a rich experience.

Route and Accessibility:
All three cities are well connected by road, rail, and air. The nearest airport to Ayodhya is in Lucknow, while Varanasi has its own airport. There's a good network of trains connecting these cities as well.

Altitude and Acclimatization:
All three cities are situated in the plains, so there are no particular needs for altitude acclimatization. However, dehydration could be a concern in the hotter months, so ensure you drink enough water.

Accommodation and Booking:
All three cities offer a range of accommodations from budget to luxury. Ensure you book in advance, especially during festive seasons, to secure the best places.

Clothing and Essentials:
Dress modestly, especially when visiting religious sites. Summers can be hot, so pack lightweight, breathable clothing, a hat, sunglasses, and sunblock. Winters can be chilly, so carry layered clothing. Comfortable walking shoes are essential.

Health and Safety:
Carry essential medications with you, along with a basic first-aid kit. Ensure you have travel insurance for any unforeseen medical emergencies.

Local Etiquette and Respect:
Respect local customs and traditions. You are expected to remove your shoes before entering a temple. Additionally, some temples might also require you to cover your head, so having a scarf handy would be beneficial. Always ask for permission before taking photographs, especially inside religious establishments.

Remember to savor the local cuisine - Lucknow is famous for its kebabs and biryanis, while Varanasi is known for its sweets and street food. Enjoy your trip!