I'm a Bondi local...it is always packed with people...if you're looking for a more chilled beach hang out, check out Tamarama, Coogee or Bronte beach, all 5-10mins from Bondi.
Christmas Markets in Vienna are great. Buy some mulled wine (Gluhwein in German)which is served hot and is quite spicy. The mug it comes in is yours to keep - a great souvenir -but if you don't want it return it and get your €2 deposit back (Pfand).