Well I received a response from QANTAS. Outcome, Apologies and the knowledge that QANTAS's systems cannot cope with annotating special needs when it comes to ordering a chauffeur drive car.
Thank you very much for your email.
If two or more customers are travelling in different bookings and wish to book the Chauffeur transfer to travel together, only one Chauffeur Drive transfer should be booked.
The Chauffeur Drive supplier will confirm any special requests such as child seats, wheel chairs, oversized baggage, and other travelling companions directly with the customer for departure transfers when the supplier calls the customer on the day prior to departure.
This method of booking is a requirement of the Chauffeur Drive supplier contracted to Qantas to provide these services for our customers.
We appreciate that you wanted to avoid a duplication of services and to ensure that a larger vehicle was ordered to accommodate your Father and yourself. We do apologise that it is not possible to have your booking annotated with this information.
Your feedback is important to us and we appreciate your email and the time you have taken to provide it. Please be assured we are always looking to improve our services and products.
For future reference call Emirates for service! Not happy Jan.