There will be no car to pick you up if you report early. It seems difficult to arrange accommodation because there are too many people. . It is recommended to contact the nearby hotels in advance, but the student union may also provide the contact information of the hotels. You can go to Shen Nan BBS and ask the seniors in the first group.
If you report in advance, you can also come by car, so you won't be so busy during that time. .