^ I watched a video where a full-body tatted person had all their tats hidden with the make-up. It's fully possible, just too expensive/time-consuming (reapplications every so often during a shoot when it starts to fade).
^ We don't know whether Marley has been shot again or not and after getting more tats. Katrina still has more tats and has face tats, which is a big no-no for a lot. She's also shot wayyyyyy more IR than Marley has, so there's that.