Pros
Lots of upward mobility, great culture, many awesome people to work with. GMs in many branches will be retiring soon, leaving room for new blood. You will learn many great things about managing a team and business that will come in handy down the road. They were very up front: "the District Manager role is the most difficult position in this company." Can confirm. It is also the first level of management. Delivery staff (RSR) are paid commission, not hourly, and can go home whenever deliveries are complete. Great pay/work ratio. Excellent training for this role. Almost all RSR staff at my branch have been there 20+ years. A healthy, organized person with people skills will do very well here.
Cons
As a manager, you will work long hours, consistently. Stress is there, and you will at times be asked to cover delivery routes on top of your duties. might be for a day or months, depending on staffing. Pay is not great, time off will be almost impossible to get unless booked months in advance, and even then the odds arent good. One sick person can cancel your vacation (possibly). They try not to do that though. As an RSR, the physical part is heavy. There is a lot to know and be on top of, as these are your customers, not just random delivery stops. Good or bad, the RSR is accountable for the service given to customers.