My mom and I will likely be doing a two week Southern Germany and Austria trip come late May or early June. We'll be in Salzburg at least two nights but we were thinking about adding a third (we'll likely be coming from Garmisch-Partenkirchen via Innsbruck into Salzburg), with the plan to either day trip down to Halstatt or go over to Berchtesgarden/Koeningsee, potentially to see Bad Reichenhall or another of the small Bavarian towns the way back.
We don't have firm plans right this second though we lean towards doing Berchtesgarden. I was more just wondering if anyone has done that trip into Germany from Salzburg and if there were any border crossing issues? I know the EU is drastically different in terms of border management and there often times isn't anything even marking borders but I was curious about anyone's experience? We will have a rental car.
Do you have a preference Halstatt vs Koeningsee? And before anyone says it, yes I know both lakes/places are touristy.