We tip $5 per day. But I once left $100 tip at the beach club. My DH got a huge bonus that year, so we decided to treat our friends to a WDW vacation. Their children had never gone anywhere on vacation.
Lets just say the parents didn't "get Disney", but the kids loved it. So I took the kids to EMH at the MK, while my husband took the other adults to PI.
The next morning, I went to see if the other family was ready to check out, and was shocked at the state of the room! The dad had partied way too much, and did not make it to the bathroom. They had just thrown a towel over the mess in the floor.
I was shocked at my friends attitude. She told me "they have someone to clean it up!" and walked out of the room. I cleaned some of it up, but felt I was going to add to the mess!
So I left a "I am soooooo sorry note and $100. Then went to check out and tell the front desk about the mess in the other room, and tried to pay for any damage done.
I fully expected to get a charge on my credit card for the damage to the carpet, but never did.
I always fear that I have a note in the computer to watch out for us!