I am writing a detailed travel itinerary for Germany visa. Do I mention exact tourist spots that I'd go to? I haven't thought about that yet, so I have just mentioned "sightseeing". Is that okay?
The visa officials want to make a guess on what you are likely to do in your visit and use a series of questions for that. For tourist not having detailed plans is the norm. Adding too many details may make them a bit suspicious although some tourist work out to the minutes where they will be.
List the cities and hotels if already known but no need to go into more detail.
If asked, in an interview or when crossing the border into the country you can name a few of the options.