Looking at booking a BAHol to NY - flight and car. At the moment there are some excellent choices for Mrs PAL62V price wise, however I will have to return home earlier for work. But I am not sure of the date yet so I cannot book my flight.

So - I want to make the most of the double TPs offer which I may need to stay Silver next year.

I want to book her flight only, then separately book my flight later on (same outbound flight) with the car included and receive the extra TPs. BUT, I want to then leave her with the car for an extra day or so when I head home.

Is this possible to extend the car either at booking, or while we are there, past MY departure date so she still has it?