I sailed with my family aboard the Quantum of the Seas, sampler cruise, for 2 nights. Since the ship was not stopping at any ports, the whole reason was to "sample" the ship. Unfortunately my family and I could not do much sampling.
However, I will start with the "pros".
I was upgraded to a balcony room, which was nice. Did not get to really use the balcony as it was a frigid 32 degrees and windy most of the time, but still nice. The room was spacious and toiletries were provided.