Re: Chair hoggers
No, they don't take a "deposit", per se. However, they do write down your cabin number, so. one option you have is to take the towel a hog leaves and turn it in so they are charged for the 'missing' towel. As far as the Deck Patrol, it appears that their primary duty is to be on the lookout for trash and spills. On my last RCI cruise (10-days) I never saw them enforce the "no reserving chairs/lounges' rule.