I love the idea of the helitaxi for getting around Sampa (never tried it!) and 250 reails would be fine but I don't think that price will be available on Xmas eve; it would be a multiple of that. Also I need to get to Sousas, which is 20KM outside of Campinas. I checked Voom and there is no helipoint in Campinas or Viracopos.
So I think a car/taxi will be the right option. Just need to work out how to book and at what cost 😊