Please Sign In (side quest idea)
Here's one for you DM's that want a side quest that will have the player's trying to figure out how to solve it. The players have reserved a location for later & have now come in to use said reservation. Once they try to use the person will ask for the password they saved, which the player were never asked to provide. The players now have to find a way to fake their way pass the password & or pass the person. Of course they could always just call the supervisor, whom will solve the problem by figuring out that the reserve had just mixed them up with another group (doing this option will take about 2 hours or so, since the supervisor is not in the building at the time).