We travelled as part of a family group and the entire trip was paid for by my father-in-law. As we had a junior suite we had priority boarding at Southampton so this was very quick and easy (I later found out that non-priority passengers had uptown a three hour queue and the whole process was a bit chaotic, something that Marella is looking at how to improve).
Discovery is a fairly small ship and first impressions from the quayside was very pleasing. Onboard the public areas were clean and modern, plenty of seating and excellent service. Dinning was generally excellent in the main restaurants (we tended to avoid the buffet due to lack of inside seating) and although they were table service we always asked for (and got) extra helpings.
Shows were generally not my taste but the others enjoyed them; I did enjoy the magician which the others didn't. There was live music, dance classes and bingo in the lounges.
Initial reaction on entering cabin was disappointment. Sizewise it was more a large standard cabin than junior suite and the bland decor made it look dated.
Once settled in it was comfortable, there was masses of storage space and there was very little noise from outside.
The bathroom was compact with a shower over the bath which, as the bath was raised slightly, was a bit low for my six foot partner but a good water pressure and hot.
The balcony had a bistro table and 2 chairs but only one lounger which could have caused arguments had we had any sun.
Inside was a sofa bed. Also 2 armchairs which I thought unnecessary and could have been replaced with a table.
Probably would just have a normal balcony cabin in future.