all of my cats and dogs know that i am the light sleeper in my family so if they want attention/need to go outside in the middle of the night they should scratch on my bedroom door. one of my cats has figured out which window is mine as well and so if she wants inside in the middle of the night she will sit one the fence outside of my bedroom and meow to wake me up. if it's earlier in the night she knows that my dad is in the basement so she pulls at the weatherstripping on the basement door to make a loud clicking noise for him to hear
for weird affection... my other cat always scratches on the bathroom door right after i get out of the shower. when i let him in he is always purring super loud and insists on rubbing against my wet legs. i'm pretty sure it is the most affectionate he ever gets