Pros
Teachers and sales employees who actually work in retail locations tend to be passionate & knowledgeable about music. Stores open later in day (11am-8pm weekdays) which is nice if you're a night owl or hate waking up early. Good employee discounts on products.
Cons
Inflexible corporate policies & attempts to standardize procedures across stores in wildly different markets makes it impossible for store-level management & employees to deliver well on expectations of upper management & customers. Store managers who work in store full time have no real authority, influence, or decision-making power, whereas district managers (who visit each location once a month at best) have to pass on orders from even higher level management that may have never even stepped foot in the store.
They will start you at as close to legal minimum wage as they can get by location, and even the hourly pay for store managers is absolutely criminal compared to the amount of work & complexity of operations required. Commission structure is also highly flawed.