To get a *general* idea about how full your ship is, go to CruiseFish. (I don't think I can post a link here so you'll have to Google it.) It's not exact science, but it will tell you the percentage of *categories* that are available and which ones, but not rooms. So, if one room is available - or 20 - then the category is available. But it gives you an idea, and it may show some movement. Our May Alaska cruise went from 72% up to 80% - I've never seen it so high! We watch for fun, but again, it's not science. If you really want to know you have to count yourself!