After having sailed on ten cruises I consider myself somewhat of a seasoned cruiser. My cruise on the Celebrity Century that sailed along the California Coast on April 26 2014 was by far my worst cruising experience bar none. This was my first sailing with Celebrity and I can assure you it will be my last! Most of the crew seemed to be very unfriendly with the exception of the cabin crew they were great!. We had requested an early seating in the Grand Restaurant with a table for two when we booked this cruise. Our first night out we went to the restaurant and was escorted to our table for two. This table was located next to a larger table for six or eight guest. Our waiter happen to also be the waiter for the larger party and a few other tables. We were seated just a few minutes when my wife said she would like some water, and I agreed with her. We asked, no less then four times for water from anyone who happened to walk past our table only to be ignored. We did finally get our water and placed our order for our meal. I had requested a Shrimp Cocktail as an appetizer. The Salad came first, followed by the main course....and then the appetizer was served last, after our meal..I always thought the appetizer was served BEFORE a meal....not after! We never had that happen before so maybe its something new that's being done. During the course of the meal our waiter kept bumping into my chair and/or me while serving the other tables next to ours. Not once did he apologize or try to avoid bumping into me. I kept moving my chair further and further away from the other table so he would have more room to maneuver, and I continued to do this to the point I was sitting on an angle from our table..but it didn't do any good. After that experience we never went back to that restaurant and we avoided the two formal nights which we were really looking forward to and elected to have all our meals at the Cafe. Most of the food severs in the Cafe were not very friendly and would not smile at any of the guest, but that was better then being bump around all night long. We knew after our first port of call in Santa Barbara, that was the very next day, that this was not going to be a cruise to remember. With only two or three tenders running the lines were long. On our return to the ship my wife..who is 69 had trouble getting off the tender and on to the ships platform because of choppy seas. She was being cautious and trying to keep her balance while exiting the tender. Well I guess she was taking to long to exit as far as one of the anxious younger guest was concerned and who must have been in a hurry, that he brushed right past her and knocked her over and didn't even look back. Fortunately she didn't get pushed in to the water. The unconcerned crew, there were four of them on the platform I'm guessing that their job was to tie up the tenders and not offer assistance to the returning guest because not one of them offered to help her up that was left up to some of the other guest and myself and I am 75, They just looked at her and made no attempt to help her up, truly not a cruise line for seniors. Our second ports of call that also required a tender was Monterrey and was a nightmare also. The use of only two or three tenders to move 1500 plus passengers is not a wise move. The long lines and wait to return to the ship was totally unacceptable! The temperature that day was in the mid 80's and there was no shade for the returning guest..but we did notice that the crew who were on hand near the ramp and handing out cups of water had a canopy..God forbid they should suffer any discomfort! I know that the lack of tenders was just a way of cutting cost but was done at the expense of theie guest. We did not attend any of the shows until midway throuOn the night of April 28 while tied up in San Francisco we smelled exhaust fumes coming in to the cabin through the air condition vent. I called guest services to report this and was told that some one would look in to this. I checked out in the hallway but could not smell anything there. While out in the hallway there was some one from the crew looking inside a panel and there was another guest from the cabin next to ours who was outside talking to him. I found out that they too had this odor in their cabin. My wife and i started to get a headache and after about 30 minutes the odor began to disappear as did our headache. The next day ther was an envelope attached to our cabin door which had a note apologizing for any discomfort we may have suffered along with a two free drinks coupon as long as they did not exceed $10.00 each. On Friday the last night of this cruise I once again smelled the same odor and reported it as again only to be told they will look in to it and not to worry, that odor cleared up fairly quickly.. We did not attend any of the shows until midway through our cruise and with the exception of a Neil Diamond imitator, a juggler and a comedian, who were all very entertaining and to us the highlights of the entertainment, the ships dancers and singer were very amateurish and LOUD. I am sure there were many guest who were starved for any type of entertainment and thought they shows were great. Now for the kicker! When we left the port of Los Angeles it was from Piers 91/92 and also where anyone who drove to the port also parked their cars. When we returned we were docked at Pier 46, 1.7 miles and a 10 minute drive to where our cars are parked, oh sure, shuttle service was offered free of charge, except for the tipping of the shuttle driver which was unexpected. What I don't understand was that our ship arrived in port one hour earlier then expected, but was required to dock at Pier 46. One hour later a NCL ship came in to the channel and was able to dock at Piers 91/92, what happen to first come first serve....most the other guest who witness this felt the same way and had the feeling that Celebrity had to play second fiddle to the other cruise lines. The morning of the departure we heard an announcement that said that since the ship had docked early, it docked at 6:00am instead of the original time of 7:00am, and since it was ahead of scheduled that debarkation would be earlier and to proceed to our assigned lounge. After waiting for almost 2-1/2 hours I found a crew member who was calling the numbers and asked him when was our number going to be called..he said that it wasn't scheduled to be called until 9:30am which was the original debarkation time for those of us with that number. I asked him what happen to the earlier debarkation that was announced and he said " that was only about 10 minutes earlier everything else stayed the same" I said well that was not what they announced earlier and that's why we went so early..he replied, in a sarcastic tone. "well that's your fault if you went that early" and walked away. I somehow got the feeling that Celebrity is the training grounds for all the other Cruise lines because I have NEVER experienced such terrible service ever. And I won't even go in to the fact that my wife became ill halfway through the cruise and had to see the ships doctor. Not a fan of celebrity