[antaviana]

Actually, there is a restaurant where I go sometimes that when I pay cash instead of with a credit card, the owner gets so elated that rounds down the amount to pay in some 3-7%. The countertip I guess.

[ryandv]

Restaurants and bars especially in my city love tax evasion - that's why they are so enthusiastic about cash payments.

[jajko]

Yes thats normally the main drive, cash is usually just annoyance and additional risk to business.

I wouldnt be too harsh judging that business though, quite a few restaurants are barely cutting it so this may help them stay afloat. Its this or generally higher prices in restaurants.