I have all my files in one "master" folder and subdivided into year month (1911, 1912, 2001, etc) and then date (20201225 for yesterday). I have set the "ingest" Primary destination to be "Q:\Uploads\" file path and directory name (Windows 10).
Source directory structure = ignore - copy all....
Copy Photos = into folder with name
Folder Name = 20{month0}\{datesort} using the variables in PMP.
I will have to change the 20 to 21 in a few days time...
The above may not be the most elegant but it works for me. (note that I have been using PMP for almost one month now.....)
Can't talk about ingesting at an event but back in office I take card from camera and use a dedicated card reader.
HTH
Dave