You say to the cashier you want to pay in cryptocurrency and their system shows them a selection:

They say they will add more crypto and BTC LN.

After selecting bitcoin and and continue (Continuar) it shows the amount in bitcoin

After that it shows a QR code, you scan it and have to wait for at least one confirmation after you get one confirmation (mine took several minutes) the cashier press payment received and I suppose it checks one blockchain explorer for one confirmation or pending transaction that matches the amount. If it matches it says payment received and receipt is printed.

I noticed each time you press continuar a new QR code gets generated, so new or different address.

I used Trust Wallet and the fee was 1.36 USD.

Receipt is shown in Bolivares, but that is common here even if you pay with USD, Euros or any currency the invoice will be printed in Bolivares.

Experience was good overall, but in this case I paid a little more, something to improve.

You have to remember that here the economy is destroyed:

• Monthly inflation can be over 10% easily. Being it under 10% is a success.

• Monthly minimum wage is 130 Bs. (less than 5 USD, this purchase was 5x monthly minimum wage), average monthly wage is 120 USD.

• Since 2007 14 zeroes were removed from the currency, so this 725 Bs would have been 72,500,000,000,000,000

Thanks for the support to all redditors. Any question let me know!