Back during my early days of gaming, we didn't worry much about the "where and why" that got our party to the adventure location - the adventure itself was the thing.
No sandbox, no plot hooks, no threads leading from one adventure to the next. Most times, not even a bar scene. Usually, you were told your motivation with your destination around the corner and went at it.
DCC RPG adventures seem to expect a similar style of play to my eyes - cut to the chase and hop right into the action.
How does it play out in your DCC campaigns?
How different is it from the expectations you have of other OSR styled campaigns?