This was my 2nd Caribbean cruise and we brought 2 friends who had never cruised before. We wanted a smaller ship and also the likelihood of less young children, hence the choice of Holland America and the Oosterdam. I must say that the staff made the holiday the best, from the room service, sommelier, waiters, barkeeps, most of the folks were friendly, helpful and always willing to please - of course there's always a few exceptions so we just didn't go where we weren't treated the best!
Overall we enjoyed the amenities onboard but a few things could be improved upon. The evening show entertainment while very good was VERY SHORT!!! I realize there's 2 shows most nights but each show was less than an hour which fell quite short of a really entertaining event. We also found many of the daily activities somewhat bland - there was no events during the day by the pool, which we had experienced on our other cruise which was very enjoyable and entertaining. As well on the other cruise there were nightly, adult interactive games - like a newly wed game etc etc. which gets everyone involved. I did miss this sort of activity onboard.
So if you are looking for a really relaxing, laid back atmosphere, with little excitement, good food, drinks, and lots of rest - you will very much enjoy the Oosterdam.