Hello! It sounds like an exciting trip to the enchanting cities of Pyatigorsk, Kislovodsk, and Zheleznovodsk in Russia. Here are some travel tips for you:

Best Time to Visit:
The best time to visit these cities is during the summer months (June to August) when the weather is warm and the natural beauty is at its peak. However, mid-May or early September can also be good times for avoiding huge crowds while still enjoying good weather.

Route and Accessibility:
The most common way to reach Pyatigorsk is by air through the Mineralnye Vody Airport, which is about 25km from the city. There are frequent flights from major Russian cities. The cities are well-connected by trains and buses, with regular services from many major cities across Russia.

Accommodation and Booking:
Both cities offer a wide range of accommodations from budget hostels to luxury hotels. It's recommended to book in advance, especially during the peak season. Booking platforms like Booking.com, Airbnb can be used.

Clothing and Essentials:
For summer trips, light clothing is recommended. However, nights can still get chilly, so bring a light jacket or sweater. Don’t forget a comfortable pair of shoes for walking. Pack essential items like sunscreen, hats, and sunglasses to protect from the sun. If visiting in winter, pack warm clothing, including thermal wear, boots, gloves, and a heavy coat.

Health and Safety:
Standard travel insurance is recommended. The cities are generally safe, but like always, stay vigilant, avoid isolated areas at night, and secure your valuables. If you venture into mountainous areas, take care to respect wildlife and follow safety instructions. It's important to stay hydrated and protect yourself from sun exposure.

Local Etiquette and Respect:
Russians value their customs and etiquettes. When visiting churches, women are expected to cover their heads and everyone should dress modestly. It's respectful to learn a few basic Russian phrases. Pepper your conversation with 'please' (пожалуйста) and 'thank you' (спасибо).