I am trying to figure out our tips so that we can fill our envelopes before we leave (one week to go!! ). We're a large group (16), and I know that we'll have tips included in our bills. I've figured up 20% for each bill for our regular, sit-down table service meals. However, I'm wondering about tipping at buffet meals. My husband thinks $1 a person is acceptable. But will they still put an 18% tip on the bill? Anyone have any experience with large groups at buffet restaurants?