On the other hand, you could argue that the reason they have a “no daytime visitors” rule in the first place is because they have no way of knowing how manhunt visitors there are so they just make the rule “none” so they don’t have to try to provide how many were there at once.

If you could accurately know how many people there are and when they are there, you could have a more reasonable rule like “no more than 3 guests during the day and they have to leave by 9pm” or something.