The store on the waiting area before entering the registration channels is not working, and apparently it has been for a long time. There is a Beltamozhservice trailer nearby where you can buy snacks: hot dogs, tartilla, etc. The woman in the trailer works extremely slowly and seems to be deliberately stretching the queue. He responds rudely to comments. And there is no desire to approach her again. The waiting time before entering the registration channels can be up to several hours.
While driving through the border, I did not notice that this facility was working, possibly due to the fact that it was night time. Basically, you can't get a lot of things on the RP.