This is my current secret as well. Depends on how dense your area is, but either find a medical office park like this, or a hospital campus if in a major city.

This is my current secret as well. Depends on how dense your area is, but either find a medical office park like this, or a hospital campus if in a major city. They usually will have a pharmacy that is largely used to service other providers in park/campus, and thus is typically pretty laid back. A large number of these keep a retail counter open almost as an afterthought, but in a hospital setting usually meant for patients being discharged or whatever I imagine. Most of these will take anyone off the streets. Recently this has started to change so I expect in a few years most will no longer take "retail" (the secret is long out, so more and more control-seekers are wasting staff time) customers at all and only service inpatient. It's worth driving an extra 10 minutes if you have such an option. Otherwise if you must go chain I've had the best luck and heard mostly good things from staff about Costco. Walmart also seems to have a quite functional pharmacy - but it can be quite hit or miss depending on location, and is starting to suffer from the general overworking conditions the rest of the chains have.