What task is MOST LIKELY to ensure your client has a confirmed reservation?

Saving a copy of the confirmation number is the most reliable task to ensure that your client has a confirmed reservation. The confirmation number serves as a proof of the reservation and is essential for verifying the booking with the hotel. With this number, you can easily check the details of the reservation and resolve any potential issues that might arise upon arrival at the hotel.

While contacting the hotel one day before arrival can serve as a follow-up to confirm the reservation, this step does not guarantee that the reservation exists unless the confirmation number is already verified. Choosing a luxury room or asking for an upgrade at check-in pertains more to the quality of stay rather than confirming the reservation itself. Therefore, saving the confirmation number is the most direct and effective method to ensure the reservation is secured.