Since we are diamond RCCL folks, we were looking forward to at least the same type of customer service on a Celebrity ship, but that was not the case. Hardly a day went by that wrong information was given to us by crew members, which caused us great inconvenience.And we were told many times that no one knew answers to our routine questions.No one made an effort to find answers, either. In Venice, the check in process took over 3 hours. We were told the bus back to the ship from Piazzale Roma in Venice was available until 8:30 pm but it was never available. We knew how to use the public bus, so we made it back, but others were stranded. Waterfall Cafe is not a full buffet and had horrible selection and service. Our dining room waiter was lethargic and not helpful to the point that we requested a different table.The wait staff was great after that. We did have a terrific room attendant. She was superb. Evening theater entertainment was very mediocre and amateurish. Room service had to be ordered through the Guest Relations desk and never came with all orders right. We were given a credit for computer time but it was still billed to our credit card. When we went to the Guest Relations to express our concerns, the girl was very very rude and unhelpful. A first for us. The ship was big on germ prevention with hand sanitizer everywhere, but the attendant in the computer room was obviously ill with at least a bad cold and should not have been there. We loved the ports and never used ship excursions and had great experieinces. We decided to use Celebrity's Barcelona 4 hour tour on the last day. It was announced in the waiting for departure area that our luggage would be on the tour bus. But when we left the ship, we were then told to find our luggage-which was scattered all over the area. We then had to get a porter to take the bags to the bus.It was very messy.When we were off of the bus, our guide did not wait for the whole group to gather before giving information, so it was an unguided tour most of the time. Then at the end of the tour we were to be dropped off at Playa Catalonya. The bus parked by a median in the street,not at the outside curb. Our bags were dumped on the narrow median and other buses were in the lane closer to the curb. It was dangerous to say the least. Then we had to get ourselves and luggage to a cab stand 1/2 block from this point to get a cab to our hotel. Despite the splendid ports, we were really eager to get off the ship and the horrible tour experience at the end justified our eagerness to leave the Celebrity ship behind.