I have a question about your debit card. Is it so that once I get it, its a Prepaid Card so Ican send some BTC (for example 0,1 BTC) and then I simply go to a shop, buy something , pay with it, and in that moment when I pay it converts the needed amount of BTC in order to pay what im buying (in real time whith the conversion rate of the moment) and the rest of my BTC is not converted to euros?

And what kind of index do you use to convert my BTC into BTC? Do I have to pay the miners fee every time I buy something so its better not to use to pay unexpensive ammounts of money?

Im planning to use it to pay fuel once a wwek (20 euros), groceries once a week (20 euros), restaurant, etc. but im not willing to pay high fees.

Thanks for your information!