Generally, the shoes need to "work-in" a little to conform to the exact drum diameter. Different shoes will need less or more time to "perfectly" fit due to differences in relining material, thickness, glue-job, shoe cores, and your drums.

If the wheel can be turned by hand with a slight "scuffing" you are likely fine. If it is difficult to turn the wheel by hand or you can feel the drag as you attempt to coast, they are too tight. Too tight means something is still not right, they are now adjusted too tight or the shoes were just too thick and need a little relief... The last process is best done by a pro but you can do it with a file or power sander by knocking down the areas that have been rubbing (pretty obvious when you open it back up).

Try adjusting the shoes all the way out, backing off one turn and tromping on the brakes a few times and yanking on the p-brake handle. Then tighten up again and back off... sometimes that will gain a better centering and the rubbing will lessen or cease.

Ja, running too tight will accelerate brake wear but may or may not cause WC and bearing issues depending on the extent of the rubbing and time it happens. If the hubs get hot after a drive you should consider tearing back down and creating some clearance.

As an example, I drove my old VW van for three miles once with the p-brake engaged enough to keep the car from rolling. The engine was able to overcome the resistance and by the time I got to my destination they were still binding a little but not enough to prevent rolling. Letting off the brake while it cooled let the thing relax and all was well for another 5 years.

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Mike!