EthereFi wallet is now launched and it has also released a visa card. Currently the card and wallet for the payments make use of the USDC. So you can expect the terminal and POS to allow this card for the payment. So you can basically spend your rewards that you earn out of the stake online and offline in this way. Considering this is a Visa card it would be usable anywhere in the world. 

EtherFi now has three products - stake, liquid and cash. So the cash product would be making use of the card and wallet. And it would allow the users to spend their cash online using these methods. So the stake and liquid products were already good and useful for consumers. And now the card and mobile wallet functionality makes things more easier as well. 

Does that mean the card is open for all? No. The visa card have national issues like US it may be issued to you but in some other countries local rules apply. And if you are into the nation where the is a ban on crypto or the regulation then the card can't be issued that easily. Visa is having those regulation applied to them. 

You can check out EtherFi.