This has gone on for a long time in many different establishments. I have told staff not to try to con me and others with the " tax"..some have even tried to claim it really exists and goes to the government which is a lie of course. I check every time. If in doubt I ask if they have included service and then tip accordingly. I am a 20% tipper but, if they add 15% and the service was nothing special that's what they get. TIPS mean "To Insure Prompt Service"..once the tip is automatically added there is little reason for anyone "To Insure Prompt Service"..