This was our 5th Crystal cruise. As with our previous cruises, we were pleased with the cruise. On this cruise, my wife and I were accompanied by two of our adult children and they also had a wonderful cruise experience. The ship's staff generally provided outstanding service, particularly our cabin attendants, bar staff and pool service staff. The ship was beautifully maintained and, though completely full, still provided that spacious feeling we've come to enjoy on the Serenity. The staff were friendly, the all inclusive fare again proved a most desirable feature and the experience was most enjoyable. That being said, there were some letdowns that we had not previously experienced on Crystal. The main dining room staff waiting our table appeared disinterested and aloof. They did the minimum. Bread was offered once. Menu recommendations were never volunteered. Our waiter disappeared for long stretches and it was not to wait other tables. He simply vanished from the dining room floor leaving his attendant to try and cope with all of his tables. Not once did our waiter inquire as to our satisfaction with what was served. The exception was our wine steward who was very attentive and informative and did a wonderful job of seeing to our every need.. We also thought the main dining room fare was pretty average. Some entrees were barely warm when served and had become dried out from apparently sitting under warming lamps.New cuisine choices on left side of menu were very limited and not all that creative. Traditional menu was just that....seemed to be same choices as previous cruises, and while OK, was largely unimaginative, bland and no ethnic or fusion cuisine food options or variations. Overall, main dining room fare was very average.We opted for the specialty restaurants and paid the extra fee for dining in these more than once. These were wonderful. Both Nobu and Prego were superb...great choices, tasty food and magnificent ambiance. Tastes Restaurant was very good also for both lunch and dinner and many creative and ethnic choices were available. Also, for first time, we noticed Crystal staff are allowing passengers to monopolize on shaded poolside furniture. Every day, passengers would invariably (and rudely) place personal effects on limited shaded area furniture early each morning then leave. Most of these would remain unoccupied until mid-afternoon while those who came to pool in the interim had no shaded place to sit. Sadly, there was no enforcement by staff to prohibit this practice. All that being said, these exceptions were just that. They were annoyances we worked around and we did not allow these to spoil our enjoyment of the cruise. From our view, Crystal remains the best of the luxury cruise options that we have experienced and we will be back.