Send the whole day, not one journey
A New Forest wedding almost never needs one car. It needs guests brought from three or four hotels, a run for the people who cannot drive back, and often an airport leg for the relatives who flew in. Those movements interact: the same vehicle can do two of them if the timings are known in advance, and cannot do either if they are not.
So send the list. Pickup points, times, passenger numbers, in one message. We will come back with the vehicle allocation and one price for the lot. Quoting the movements together lets us share vehicles between them, which usually works out better than pricing each journey blind — and booking ahead is the only way to hold cars for 23:30 on a Saturday in August.