Preparing for figure skating off-ice?

Ever since I was like 8 figure skating has been my dream. I live in a very tropical region which means there are no ice rinks here. I always go ice skating when I travel so I have the basics down but that’s about it. I’ll be moving to Germany in less than a year and the first thing I’m doing is signing up for some figure skating classes. I’m really excited and I want to be as prepared as possible but I don’t if it’s possible to practice without ice.I do have rollerblades and I was wondering if figure skating on them would be any useful on ice. I also thought of doing a flexibility training but I don’t know where to start. Any tips are appreciated.