It really depends on the day and time (not super helpful, I know), but my best advice is to arrive *before* their upcoming greeting window opens. The earlier you line up, the shorter your wait will be and you won't worry about the line being cut before you get there. They can only meet so many people during each of their windows and a CM will close the line once it reaches that point. For Jasmine, she is kind of tucked away in Morocco and the times we have met her there has not been a long line. I'd say 5-15 minute wait depending on when you get to the line. For Belle, since that is the only place to meet her in her blue dress, you will definitely want to get there before the start of one of her greeting windows. I would recommend arriving at her meeting spot at least 15 minutes before she will be starting her next meet.