If you've enabled Ad Personalisation for your property but want to exclude specific events, what happens to the data for those events?

When you exclude specific events from ad personalization, Google Analytics processes the data from those events solely for measurement. This means the data contributes to your reports and analyses, providing insights into user behavior and event performance, but it will not be used to build audiences for advertising or to personalize ads. The data is still collected and visible in your standard reports and explorations. It is not restricted to the Advertising section, nor is it exclusively used for Google Ads audiences; its primary purpose becomes analytical measurement.