And this, for me, is the main problem I have with RSD.
Have you actually tried to go to a participating store on the day and get what you want? There's such limited quantities of participating releases sent to each store that you have to get there super early in the day, and even then there's likely a queue to join, so by the time you get to the counter the one/s you want are likely all gone.
In previous years (I haven't checked this year's store locations) the nearest participating store to me is 35 miles away, there's no way I'm getting up at the crack of dawn just to travel that distance for disappointment and frustration, so the Internet it has been.
I've had more luck with RSD from the 'net than in-store purchases anyway.
The one time I got what I wanted from in-store the only copy they had left had a damaged cover, all the RSD web purchases I've made have arrived in pristine condition.
I know physical stores have it tough these days, but for some (me included) the Internet is just a much better option.
Mark