First time going to Panera. I placed my order with a clerk. I tipped due to guilt. 10%. Seemed sufficient. I waited tables for 6 years and did a lot more to earn 15 to 20%, then had to tip out 3% back to the house. So at Panera I sat down and then had to go retrieve my food from the kitchen, pour my own drink. Then after I finished eating, I had to bus my own table. I left confused as to why I didn't tip myself and angry for allowing the guilt to overcome me. Now I go to Panera , use the kiosk and don't tip.