Absolutely! Here are some tips for your trip to Vienna, Wachau, and Linz:

Best Time to Visit:
The best time to visit Vienna and Linz is April through October; while Wachau is best enjoyed from August to October when the grape harvest takes place.

Route and Accessibility:
All three cities are well-connected by rail and road network. Vienna is the central hub, with direct trains and buses going to both Wachau and Linz. Renting a car is also a good option if you plan on exploring more of the countryside.

Altitude and Acclimatization:
Vienna, Wachau, and Linz are all relatively low-altitude places, so no acclimatization is necessary.

Accommodation and Booking:
Hotels and Airbnb options are available in Vienna, Linz and Wachau. It's recommended to book a place in Vienna's Innere Stadt, or “inner city”, from where most tourist attractions are easily accessible. Ensure to book in advance to avoid last-minute hassles.

Clothing and Essentials:
Pack a mix of light and warm clothes as the temperature can vary. Umbrella and comfortable shoes are essential. Don't forget your camera to capture the stunning architecture and scenic beauty.

Health and Safety:
It's generally safe to travel to these cities. Still, keep your belongings close and be aware of your surroundings. If you have specific dietary or health concerns, inform your accommodation in advance.

Local Etiquette and Respect:
Austrians appreciate punctuality and politeness. When entering shops, it's customary to greet with a "Grüß Gott" (good day). Remember to tip in restaurants and cafes, as it's common practice (5-10% is typical). While visiting churches or other religious sites, dress modestly out of respect.