Count the occupied seats first
List the people who will travel together and identify any journeys with a different group. Note relevant child-seat requests or mobility preferences without assuming that a certain body style resolves them. Ask the provider to explain the seating layout of the actual vehicle being considered. Keep the full passenger requirement visible while luggage is discussed.
If the group changes during the visit, describe when that happens. A car that suits two occupants most days may not suit the one transfer with everyone aboard. Select against the important maximum rather than the average use of the vehicle.
Replace bag labels with dimensions
Take a quick measurement of the rigid cases and list smaller items separately. Include strollers, garment bags and equipment with an unusual shape. The description two large cases can mean different things to different travellers. Measurements give the team something concrete to compare with the proposed vehicle.
Consider how often those items will be loaded and whether you need access to them while travelling. Keep anything needed during the journey within the arrangement you discuss, rather than buried beneath the rest of the luggage. Clear information makes a practical recommendation easier.
Identify the transfer with the most belongings
Map the moments when luggage leaves your accommodation. A hotel change, early checkout or cruise departure can create a much larger load than the ordinary outings in between. Add the bags you expect to acquire during the visit, including shopping that may need protection or a different shape of storage.
If that transfer challenges the vehicle choice, discuss a separate luggage arrangement or a different car before booking. Ask what would need to be organised and priced. Do not treat an informal suggestion as a confirmed extra service.
Confirm the proposed solution together
Review the car, occupied seating and described luggage in the same conversation. Ask the team to explain any compromises, such as a different configuration or a smaller selection of bags. If a substitute vehicle is later proposed, return to the same list rather than accepting the broad label SUV as sufficient.
At handover, load the vehicle in a safe place with time to check the arrangement. Keep the cabin comfortable and follow the instructions associated with the exact car. A successful choice is one the group can use without repacking the whole trip around an avoidable surprise.
Useful answers
A few more details.
What is the simplest luggage brief?
List occupied seats, each rigid case with dimensions, smaller bags and any awkward item. Highlight the journey when everything must travel together.