You offer Villas, car hire, park tickets, flights.

Why not include travel insurance with a link to a suitable insurer or broker? Obviously a properly chosen, reasonably priced one with ability to take on pre-existing conditions etc? Those of us who have used you for all of the above and found your deals very reasonable would have some confidence in the background work you would do on it.

Could earn you some money and add the final touch to your all round package.