The trend of restaurants and food places accepting bitcoin in not that much popular, although it is increasing. I think the confirmation time of bitcoin is not favorable for food business , customer cant wait 30 to 40 mins in order for his tx to be confirmed and then take his order.
Well dude i know this trend ' restaurant accepting bitcoin ' is not too popular in society. But if we see from profitable aspect, this is will be good idea. On Singapore there's some restaurants which accepting bitcoin since 2014 and they said that Bitcoin value obtained by them has increased 500 percent of its original value. It's sounds good because the value of bitcoin relative increase time by time.