A fair number of our clients are heavily focussed on events happening in their area. Some clients can easily feature hundreds of events a week!
Since Metro Publisher's event system is robust and built around the ICAL standard, it has become the primary input area for event data for the communities. To add efficiency to this workflow, we've implemented customizable XML exports that can be flowed into InDesign layouts.
Here is a how-to video that illustrates this process with a sample project provided by one of our clients. Your layout may be different, but the key steps of preparing the export and importing into InDesign will likely be the same.