I accidentally stumbled upon this hint, because Marriott’s site as of January 2014 does not print nicely. The menus expand on their print css, so the real content shows up after a page long list.
Anyway, Google Chrome has a built in “Print Selected” function, but the option only appears when you have text selected. Just select the portion of the page you want to print, click on the “Menu” icon (3 horizontal lines), and select “Print…”. Near the bottom of the Chrome Print dialog, a new checkbox has appeared labeled “Selection only”. Check this option, and Chrome will update the preview.