I wouldn’t say it’s great even there. If you want people to pay 20% more for their food so your workers can get paid, just list that on the menu. Raise all food prices 20% and pay the wait staff a decent wage. Customers pay the same in the end and your staff isn’t dependent on customer generosity to make a living.
Sure, but don’t let that stop you from insulting him. The activity is its own reward.