Advice on a road trip to Dolomites [closed]

This year, at the beginning of September, I am planning a road trip with my GF. The plan is to visit some sites in the Dolomites, Italy. Also, I would like to visit Franz Josef Hohe (I was there once before), to get a nice view of Grossglockner. If there is time, we would also steer a little bit off course to visit the southern part of Switzerland and some of Liechtenstein. The trip is currently planned over four days. The starting point is in Ljubljana, Slovenia. We would like to stay in B&Bs. We would like to spend one night in Heiligenblut (below Grossglockner). All other stays are negotiable.

I would like to get some advice on this specific road trip and also some general advice:

What are the must-haves on road trips (if any, apart from the fully functioning car)?
What are the must-sees in the Dolomites, once I am there? What about Switzerland and Liechtenstein? We enjoy nature and also historical monuments. Museums are not really our main interest.
Do you have any suggested routes where to drive to the Dolomites and also through them (to do some sight-seeing from the car)? One part of the route would clearly be the road from Heiligenblut through Lienz to the Dolomites (or the other way around).
Is it good to book B&Bs in advance or is it better to just arrive there and find the most suitable option?
As regards the previous question, are there any recommended B&Bs you know of? Are there any you have had bad experiences with?
The trip would be more of a student budget, so we will not stay in any high class hotels.

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Advice on a road trip to Dolomites [closed] - High Road Surrounded by Green Tress during Daytime

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Is it easy to drive in Dolomites?

The Dolomites are a mountainous area in the Northern part of Italy but the area also shares a lot of Austrian influences. The roads are well maintained and you'll find road signs in both German, Italian and sometimes even in English. Even the mountain passes are pretty easy to drive across.

Can you drive through the Dolomites?

The Dolomites in the North of Italy boast some of the mightiest granite peaks of Europe. This region is home to a spectacular road that provides both exhilarating and scenic driving. The Great Dolomites Road takes you from Bolzano to Cortina d'Ampezzo through the heart of the UNESCO-listed Dolomites.

Is it worth going to the Dolomites?

There Is Something To Do There No Matter The SeasonThe Dolomites are known for being a great place to visit in the summer months as well as the winter months. This range has countless activities for people visiting, regardless of when. Hiking, rafting, and cycling are popular in the fair months.

How long should you spend in the Dolomites?

As a first-timer, I recommend spending at least 4-5 days in the Dolomites. This will give you enough time to visit the must-see sights such as Alpe di Siusi, Lago di Braies or Tre Cime di Lavaredo.

Dolomites Italy COMPLETE TRAVEL GUIDE // The ultimate Dolomites road trip travel guide + what to see

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Images: Elle Hughes, Josh Sorenson, Vanessa Garcia, Elijah O'Donnell