Independent or Tour? When you are in Austria here a re couple of things to try if you are solo or you shed the tour chains:
Salzburg try the Augustiener or Stiegl Brewery's. Beers are good and the food is excellent.
Wien/Vienna - so much to see and do. Do note you will be here when it is hot, very hot and humid. Head up to Neustift am Walde for a Heuriger experience. Avoid Wolfe, the other 39 in Neustift are all pretty good. Grinzig is a Tourist Trap; Zum Martin Sepp is the only good one. If you head to Schönbrun Palace get there earlz and wear good walking shoes. Also bring water
Thursday heading to Iceland for a long weekend with the Nikons; personal. Week after Paris, London, Münich mostly work, some timeoff for Bad Behavior. End of August need to burn a week of vacation looking at either Japan or Korea for air miles to maintain Airline Status