Originally Posted by
Jon Maiman
For properties in the United States, I agree booking for 2 adults and notifying the hotel of children (even at check-in) will work fine. For Europe, it can be an issue and you should reach out to the hotel directly to see if they have family rooms available. Not sure what applies for South America.
--Jon
Hotels have legal occupancy numbers. If the room you reserve isn’t rated large enough for 4 there could be problems.