They WILL try to sell you on a package of vacations at a "reduced cost", that will still run into the thousands of dollars. My wife and I got pulled into a sales pitch one time that was like this, except we didn't get the ultra-discount up-front offer. If you take that cruise, you'll be asked to sit in on a "short presentation" that turns into a high-pressure sales pitch, and if/when you say no, Mr. Friendly Sales Associate will have nasty things to say to you.
Y2KSVT called it right on the nose. If you want to go on a cruise, buy it yourself.