I'm not irate at this, and will have no problem if it is cancelled and refunded. However, I, for one, did not know it was an error. This is the first RC cruise I have booked and I have read everywhere that prices change and fluctuate and I check, usually, before bed if there are any new activities added. When I saw this, I booked it.
Just last week I looked and cabanas for my trip were still available but I was waiting for some possible sale. The next day some were up $200 and others $100; I booked immediately. So when I saw a drink package dropped in price, around the 4th of July holiday, I jumped because I did not want to miss it.
I can see how some people can be upset. One item can unexpectedly jump in price by about 40% overnight and it is ok; but if it drops by too much, it is an error / glitch.
A good way around this would be to have a single set price that never goes down.