instruction:
Given a travel related situation, and given a specific question about the situation, summarize the question into a title
question:
I am planning to book a direct sleeper train from Innsbruck to Prague through České Dráhy/Czech Railways. The train page says: 


  Depart from Innsbruck Hbf 
  (Train name: EN 467 EN Night Jet /EN 463/S 1540) to Praha hl.


Why are there so many names of this train or am I wrong to assume that this is a direct train? The train name changes from Salzburg Hbf (dep. 3:50) to train no. EN 463 and from station Linz Hbf (dep. 6:35) to Train S 1540. 

Does this mean I would be required to change trains at Salzburg and at Linz? 

answer:
Is the Innsbruck to Prague sleeper train really direct?


question:
Several websites tell me that "nobody" will let you fly "standby" except as a change to a fare already bought.  Is there anyone that will still sell a cheap "next unsold seat" fare?

I'm retired and have no problem hanging out an an airport for a few days to save money.  But it's not saving if it's regular plus change fee.

answer:
Does anyone still offer standby without already having paid another fare?


question:
Is it possible to visit Old Goa (for a day trip) from one of the beach resorts? How long would a taxi drive take and how much would it cost? Or is it better to spend a night or two in Panaji, and then move to the beach?

answer:

Is it possible to visit Old Goa from the beach resorts?