Well, with Celeste, if you read her history then she doesn't, she lives in a room in the abandoned city and spends all her time either at the Rebellion HQ or finding out stuff about the AISE like going on missions and stuff. Regularly, yes the other rebels do spend a lot of their time doing the regular activities and training. However, they also do missions as well to find out a lot about the AISE and they have meetings too where they all meet at once and discuss strategies and discoveries and things of the like.