I just went to print a deck plan at the Carnival site. It generated 3 pages and the deck plan was on the second page. How many pages are you getting? Alternately, you can put your mouse arrow over the deck plan, right click, and select save image (or similar wording depending on your web browser). Then print the image. Another choice is to save the image as a pdf file and then print it from there.
In any case, I can print the deck plans.