Hello! It's great to hear about your upcoming trip to Vienna, Salzburg and Innsbruck, Austria. Here are the travel tips you will find helpful:

Best Time to Visit:
The best time to visit Austria is during the spring (April to June) and fall (September to October) when the weather is pleasant. Winter is also a good time if you're interested in winter sports.

Route and Accessibility:
You can fly directly into Vienna International Airport. From Vienna, you can take the train to reach Salzburg and Innsbruck. Austria has a very reliable and efficient train system.

Accommodation and Booking:
Accommodation is plentiful in these cities, ranging from luxury hotels to budget hostels. Ensure bookings are done in advance, especially during peak tourist seasons. It's also a good idea to stay close to the city center for easy access to attractions.

Clothing and Essentials:
Depending on the time of your visit, pack accordingly. For spring and autumn, a light jacket and some layers will suffice. For winter, don't forget heavy coats, boots, gloves and hats. Don't forget your most comfortable shoes for walking around the cities.

Health and Safety:
Austria is a very safe country. However, just like any other travel destination, be aware of your surroundings, especially at night. If you have any existing medical conditions, carry necessary medications as well as a copy of prescription.

Local Etiquette and Respect:
Austrians are generally respectful and polite. In public places, loud conversations are frowned upon. Tipping is customary in Austria for good service, usually around 5-10% of the bill.