I did a CP this past spring and worked at the Bibbidi Bobbidi Boutique...
we were allowed to accept tips, but we couldn't pocket them. What we had to do was when we got the "rose petals", we had to immediately take them to the back and put them in a black, locked box on the wall. At the end of the week, a few people count out the money and it was distributed to everyone depending on how many hours that week you worked. It was really nice getting the extra $ because that's what I used to pay for groceries. It ranged from $15 a week (i didn't work much) to over $240 one week, but that's rare. The average I got was $60-80 a week.
Hope that helps