From the Celebrity website
http://www.celebritycruises.com/bef...oiU:12hdebdrn?pagename=payment_and_gratuities
Gratuities
For your convenience, we will automatically add gratuities for your restaurant and stateroom services to your onboard Seapass account on a daily basis in the following amounts, which may be adjusted at your discretion: $11.50 per person per day for guests in staterooms ($12.00 per person per day for guests in Concierge Class and AquaClass staterooms and $15.00 per person per day for guests in Suites). These service gratuities are based on the following recommended amounts:
Restaurant Service* Per Person Per Day
Waiter $3.65
Assistant Waiter $2.10
Dining Room Management $1.00
Stateroom Service* Per Person Per Day
Butler (Suites Only) $3.50
Stateroom Service $3.50 ($4.00 for Concierge Class and AquaClass staterooms)
Alternative Service*
Other Service Personnel $1.25
Beverage Service personnel are acknowledged with a 15% service charge which will be automatically added to the bill.
*Please note that gratuities may be shared with other crew members depending on the particular service requirement.
Only U.S. currency is accepted aboard the ships, and personal checks are not accepted. Credit cards can be used to secure cash by using the ATM located near the casino onboard.
Currency exchange services are available onboard at the Guest Relations Desk. The shops, lounges, shore excursions, and AquaSpa operate on a cashless system; therefore you must use your Seapass Account when purchasing beverages and services throughout the ship.