Miscellaneous: City trips are very tyring, specially in summer. Here, my mother is sleeping in the shade of Maria Theresia.
Clothing/Shoes/Weather Gear: Good walking shoes, as usual. A good jacket with lots of pockets, cause you are going to want to buy lots of stuff I'm sure.
Take a cheatsheat for currency converting:
This site allows travelers to create and print a currency converter table for their next trip.