I have an easy time pre-ordering or finessing anything, within reason. The only thing I have ever missed that I cared about was a McFarlane Platinum that I can't even think about what it is... so I guess I didn't really want it. Platinum. Red platinums. Exclusives. Chases. Con things.
If they can't figure it out in the system for me or get a transfer, I'm also that guy -Apologies to anyone this has happened to - where if I just ask if if they know about an item, they will pull it from the back and say "technically it's on hold for Rival Guy, but we like you more, so here you go."
They will even offer me things when I walk in, probably because it's such an easy add-on. "Hold this Wolverine,.we can move it as soon as he comes for his Batgirl pickup".
Also, my store, despite being the only one left after killing the other two in the area, is more Legends focused, and Joe is like a decent stock low demand item, as long as you make your needs known. The only Joe thing I have not seen restocked or even with an extra for the shelf was the Hawk missile set.
But we're going to get ahead of all that anyway by timing the pre-order online and in person. Whenever they drop a date.