I am seeing from fb, posts that show flooding, no water, no flushing, food in buffet limited hours, line ups for dining, entertainment venues not operational, port changes etc. Granted some occur on any cruise.
I am also seeing wonderful, glowing reviews about the SUN- first sailing.
I personally would not accept this as ok as a full paying passenger.
Tip: it costs more, get travel insurance for non refundable expenses, have a back up plan.