> Princess allows cashless tipping via the onboard account.
> Has Celebrity started doing this yet ?
No, but u can use your onboard account for cash in the casino, with no service fee. It's simply charged as an onboard charge, and not a cash advance by the credit card companies either.
However, make sure to use your onboard charge card, if you use your own credit card for cash at the casino, they charge a 3% service fee.