Your samsung analogy is dumb as samsung has no stand alone stores, at least that I have ever seen.Why would anyone make an appt if they can get a walk in one? Bob and Sally should make one before they drive 2.5 hours to the store. Apple could do it the Samsung way and not offer any appointments or service.
It's well documented ALL over Apple's website, and you can call the store beforehand.
Obviously you two have no clue about the average consumer. They have an issue, they go to the store they bought the device to try and solve that issue. They don't look on the internet to see what the store is going to make them do before they can be seen.... they just go. My mother isn't going to go online to ensure she needs to book an appointment so she can be seen, she's going to go, show up and be told to go F herself. Not a huge deal as she is about 10 minutes from the apple store but for someone that drove a long way it's a problem. Of course now they know they need to make an appointment for their next trip but they are a bit buggered this go around.
You used to be able to walk in and be seen and that system seemed to work well for the customers (as well as making an appointment), who gives a rat's ass if it's easier for apple store employees? They are here to serve us not the other way around. One dedicated employee to serve walk in tech issues isn't to much to ask IMHO.