If anyone is hanging out all day and evening into the night in an Apple Store, especially if it is a store open 24/7, regardless of country of location, this still would be considered "loitering" on private property, and the store in question would have every right to ask the individual to leave the premises. If he or she fails to do so, even after additional urging from store security (if the store has staff in that position) then, the next obvious step would be that the local jurisdiction of police serving the area would be called to the store to arrest the perpetrator.
Why would anyone want to even take the risks of putting themselves into that kind of situation in the first place?