I was planning a stay at a hotel in Chicago for an overnight layover and checking prices on the hotel's booking site (in this case the Hilton Chicago O'Hare Airport) for a room with 2 double beds. The site asks for the number of people in my party. In my case there will be 3 adults, no kids.
I experimented with different answers to the # of adults question and found that 1-2 people sharing a room gave a price of $94, for 3 people it was $118, and 4 people raised it to $142.
I don't get the extra charge since it will be the exact same room in all of those situations. Do most hotels do this? If I just book the room specifying 2 people and bring a 3rd is there any risk involved?
I'd also like to hear any insight from hotel insiders about what is behind the logic of charging different rates for the same room depending on how many people will be in it (assuming you don't need an extra roll-away bed). It would make sense if there was a free breakfast or something, but this hotel doesn't offer that.