I posted on another thread about the reports from financial analysts.
The bookings are down 10% to 20% across the industry and down 35% on Costa specifically.
However the cruise lines are not greatly discounting prices in an attempt to maintain overall revenue levels. Overall the cruise prices are higher (seasonally) this year then similar periods in recent past years.
Some people are still finding good spot deals, but people should not expect wide-scale cruise price declines across the industry.