What really happends and what should you do at the end of the jam?

Do you submit before the timer ends or is there like a "submission period"? Do you add screenshots / Gameplay GIFS / descriptions before or after the submission period and does that affect ratings, as In people will play games right away after the jam ends and if your game page is blank with only name and DL link no one will pay attention to it? When CAN you actually play the entries? When you use 3rd party models & Audio the rules ask you to "opt out" of the respective categories, where and when can one do that?

What kind of service do people use to provide their games the most effective way? Just a google drive file or browser based?

Should you play games from genre's you dont like/dont know much about? Like only very few platforming games actually interested me over the years, so I haven't played many of them.

So Should I:

Not play and review any of them. Play them Judge them How I truly feel. Play them and Judge on how "I think" someone who really knows alot about platforming would judge it. Play them and only leave a comment, leaving the ratings alone(If that's even a thing). Or is there some kind of magic 5th way you can think of?

Just making sure I don't do anything wrong :) Also sorry for the formatting apparently it doesn't want to work as it does in the actual editor.