Yes, up to a point. Cathy will always do a briefing call with the client before the event, to understand what her contribution needs to bring to the event. Her style is to tell true stories from her personal experience, creating case-studies from her most dramatic and informative mountain endeavours. This means that similar stories and situations will appear across her speeches. In some cases she will create completely custom speeches, but only if her experience matches with your requirements. She is happy to have a no-obligation call with you beforehand to discuss this.
The Brand Everest video is an example of a fully customised speech.