Client who insists on booking your travel
Any ideas on how to deal with a client who insists on booking your travel and using their preferred car rental agencies (Budget), airlines (American) and hotels (Holiday Inn Express) even when yours (Hertz, Delta and Four Points by Sheraton) are cheaper? I don't think the client realizes I know the points game because it's obvious what they're doing.
How have you handled this? I don't want to lose the project but when my preferences are cheaper it's absurd to fly his preferences.