The following is a sample post-activity email that would be sent out days after an activity was consumed. You are welcome to model your emails based off this sample email:
We're writing about your recent experience with [BUSINESS_NAME] (order #[TRANSACTION_IDENTIFIER].) If you enjoyed your tour would you please take a few minutes to write a review for us on Google Maps? These reviews help provide non-bias opinions to potential customers and are invaluable to us.
If there were any problems with your experience please contact us as [BUSINESS_EMAIL] or [BUSINESS_PHONE] so we can make it right.