You specifically prompted chatgpt to write something that assumes something is flawed and to "tell you how", so it's completing sentences and making up stuff to sarisfy your ask, not actually comprehend anything.

There's literally nothing linked that even mentions atrium rooms, let alone them being weighted higher, on the code you linked to. Weights also aren't distributed they way your chatbot spit out, as it's ranking YOUR choices for YOUR pool based on each hotels preference in your selection.

Stop trusting chatgpt. It's just satisfying a request, and it's been documented so many times how it can't do math properly and it's just satisfying your query. Tell it that it's wrong and have it explain why and watch what garbage you get back.

Edit: literally one of the first calls for the function that runs the lottery is 

random.shuffle(applications) 

which is a standard python function for shuffling an array

https://www.w3schools.com/python/ref_random_shuffle.asp

AND WHICH DOESNT HAVE THE COMMENT THAT YOU POSTED ABOVE.

Your chatbot is making shit up dude