Last year for my 40th birthday my wife and I took a trip to Colorado without the kids (our first trip without them since my eldest was born.). The first night we stayed at the Stanley hotel, and heard kids playing in the hall much of the night, which is supposed to be one of the most common experiences there. Apparently when the hotel was built the top floor was the children's quarters. Rich families would stay the whole summer, they would drop their kids off with the servants at the beginning of the summer and not see them again until it was time to leave in September.
My dad said the kid noise is probably piped in through speakers, and sigh, he's probably right. It was a beautiful place though and I hope to go back one day.