My family of 6 including older teens (17/19) will have 9 nights in Europe starting on June 30th before we have to arrive in Scotland on July 9th. We have taken the kids to explore London, Paris, Italy and Spain so we do not want to do those areas again. My husband and I have been to Munich, Vienna, Budapest, Prague and the surrounding areas. We are not opposed to retracing our steps to these cities for an itinerary that would be good for young college kids.
We prefer not to move more than every 2-3 nights. We love food, adventure activities, history and a bit of art, but the kids don't love to go places just to wander through tons of museums and churches. A mix of city and smaller towns is best.
I am open to suggestions beyond the two I mentioned.