The person i estalk is right, at least i think since i never got any other options (And i replayed A LOT / everytime a new chapter is out + every characters route) but i never really thought what's the outcome of it (i only thought it was where i put the prisoners) forgive me that i can't give you any tips 😔
Now that i read the options you can get i did get the best one but idk when. Personally i always choose , Maximum security for the last things (not the coronation but only for the very last event and the second one) and i either get middle or the best option (I also make the celebrations for everyone + sometimes i do, minimal security for coronation, the second idk the name middle security or maximum and the last is maximum as well)