I tip according to services rendered. If I go some place and they only have valet parking available (because they don't want to assume liability for the vehicles) I don't tip. If valet parking is an option I will only tip when I get my car back, valets are only doing their job. It's like going into a coffee shop and the employees working the counter have a tip jar, sorry you aren't waiting on me, I have to take the hot coffee and sandwich to my table myself and have to bus my table as well..........NO TIP HERE. On a side note I also WILL NOT use the check yourself out lanes in stores, this is a way of the store to make me an unpaid employee, I check myself out, I bag my own groceries, and I don't get anything in return.

If I am in a restaurant and get excellent service I will tip in excess of 20%, poor service I will leave a note on the bill stating the waitperson's name and that I was given poor service and therefore am leaving no tip. I refuse to pay included tips in a bill for a party, this is a practice that insures/incourages poor service. I have disputed this with restaurants and won. If they won't do it I simply request individual bills for everyone.