Users with the Group Sales Coordinator role cannot see the node Reservations\Itineraries\Items\Program Events. In addition, they may not be able to see queries at all if they output any program event information such as Sales Orders\Sales Order Item\Sales Order Item Ticket\Program Event.
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Steps to Duplicate
Login to Altru with a user who only has the Group Sales Coordinator role
Go to Analysis > Information Library > Add an ad-hoc query
Select a Reservation as the record type and click the Group Sale Reservations source view and click OK
Under browse for fields in follow this path: Group Sales Reservations\Itineraries\Items\Program Events