I really don't think you have to worry about the hotel "busting" you. They just don't care. It isn't
their rule so much as it is an overall "one size fits all" law and corporate policy. I have stayed there twice with over the limit parties and both times it was ok'd in advance by the staff. In fact, the first time they suggested it.
As an example of what I mean by the "one size fits all" law, in Hawaii they made the regulation of 4 persons per accomodation. Are California hotels safer for that 5th person than Hawaiian hotels

? It doesn't matter how many square feet there are or whether or not it's a suite. We stayed at my brother's condo in Hawaii one summer and tried to book 2 additional nights at a hotel on the other side of the island, where our family was having a big get-together. Because there were 5 of us, the booking agency (United Vacations) would *not* allow us to book just one room. They would not guarantee adjoining rooms. Our twins had just turned 4 and our older dd was 6, so how exactly do you split up the family? And why would we want to pay double or more when all we'd do is be in the same room anyway? The room was 650 sq ft, so this is a fire hazard because...? Most of my life I've lived in houses that were only slightly bigger

. But the law applies whether the room is 200 or 1000 sq ft. I even tried to book a suite, which was 2 rooms linked together, but because one side was a living room (no bed) it was *still* against the law. This was the Hilton Waikoloa, btw, which billed itself as a family vacation getaway. Since this was a family reunion and everyone else was staying onsite, we did not want to stay in a condo down the road.
So I called Hilton. Central reservations confirmed that we would not be allowed to book 5 into our room, regardless of the situation.
So then I called the hotel directly. They said the same thing. So I booked a room for 4 and when we arrived, I told them there were 5 of us. No one even blinked, they just smiled and showed us to our room. They were quite used to parties of our size and had no problem with it. Like I said, it's an arbitrary rule that is not made by the hotel staff. I'd like to think safety is the overall goal, but as with any rule or law that blanketly covers the entire population and in this case every hotel, it won't always fit everyone or every situation.
Technically, it is breaking the rules. I can live with that as long as I am up front with the hotel, I'm not infringing on anyone else's space or causing extra hardship.
BTW, if the hotel had told us no when we arrived, I would have said that one of our girls was going to stay in Grandma's room, which would have only been partially true (she'd still have slept in our room). Therefore you can add lying to my litany of sins.
And yes, I speed, too.