I think the group setting is really helpful. Being surrounded by a bunch of people who are also doing deep work on themselves can be really supportive. The place I worked did minimum 10-day stays (6 ceremonies), but usually longer (1 month or more). You get to know your group and the staff very well and find yourself being very open and vulnerable. The day-after-ceremony meetings are full of common experiences and people will often get inspiration from each other's stories. Working at the center was incredible, the people are one of the best parts. I made more friends in that short period than any other in my life.