the most important question that you should be asking is how many payments does that "Chicken restaurant" processes through Dash, how many through fiat and how many through bitcoin if they accepted bitcoin.
the answer is always going to disappoint you about the altcoin because that is the reality of the world. people barely spend their bitcoin let alone their altcoin investments which they bought because they hoped for a pump!
but they just started ....... at lest need to wait for 1 or 2 month before showing result. in Venezuela , i can see a good alternative because carrying a cartload of cash to pay for one meal is not practical