Headed to Prague for four nights around Christmas-time. Then, have 7 more days. Was going to go to Krakwow and Bratislava. Assume Budapest should be a place that I / we (with my 21,19, and 16 years olds) shouldn't miss. Was going to try to make it to Salzburg too as it is Mozart's 250th birthday anniversary, before heading home from Zurich on New Year's Day. An thoughts would be appreciated.