Final answer:
To change a package reservation, the customer should contact the package reservation website or company through which the reservation was made. They handle the bundled services including flights and hotel bookings as part of the package deal, and their terms and conditions provide instructions for making changes.
Step-by-step explanation:
To make a change to a package reservation, the most appropriate party to contact would typically be the package reservation website or company from which the reservation was originally made. This is because package reservations often involve a bundled service inclusive of flights, hotels, and other amenities, and the website or company offering the package is responsible for managing these details.
If, for instance, a flight change is necessary, while you could contact the airline customer service directly, if the flight is part of a larger package deal, it is normally the responsibility of the entity that sold you the package to handle such changes. Similarly, for hotel accommodations, you would usually go through the travel agent or package provider rather than directly to the hotel reception since your booking terms are with the package provider.
It is crucial to review the terms and conditions of your package reservation as they would include instructions on how to handle changes or cancellations, and some may direct you to deal with specific changes through certain channels.