this is gonna vary per person, so you won't find an average for your questions.
i worked most of my career, 23yrs+, in arkansas. non-stop, 2wks/yr vacations, monday-friday/830-830/hardly ever taking a lunch for probably the first 13-15yrs. the last 5yrs, i worked monday-thursday, 10-6pm (due to having a child/childcare hours).
tips varied per day, per week, per client. i haven't the foggiest idea how to tell you an average amount, without going back over all my tax papers.
trust me, you can't make a killing on tips. they were a bonus, and great at times, but severely lacking at other times. you can't rely on them for income, budget-wise.
at 4:06 PM on Jun. 9, 2011