I learned a long time ago, some people get it, some don't. It appears all the talking in the world won't change that for some people. Some minds are like cement, all mixed up and permanently set.
Here is why they ask us to wait until your room is ready. The crew is busting their butts cleaning and preparing rooms for those of us coming on. There are also a dedicated bunch that are bringing on the luggage and taking it up and down the hallway to the proper room. If everyone was allowed to drop off their carry ons and extra purchases, whatever they may be, then the hallways would be full of people that really don't know where they are going or what they are doing. All that would do is just slow down the whole process. It doesn't take a smart person to figure that out. You know why it doesn't? I can figure it out and I'm not that bright.