P2C reports can include each conversion and the associated parameters, including custom parameters.

True. P2C (Path to Conversion) reports in Amazon Ad Server are designed to provide detailed insights into the conversion path. This includes the ability to view each individual conversion event, along with all associated parameters. These parameters can be standard attributes like conversion time or device type, as well as custom parameters that you've configured to capture specific data relevant to your business goals. This granular level of detail is crucial for understanding user behavior and optimizing campaign performance.