Life tip from someone who has had to organize fun stuff for friends way too many times: the only wrong RSVP is the "oh ehh I'll get back to this later → never answers at all"
It's generally safe to assume that if you're invited to things that someone would rather have you there than not! However once I have to organize shit, the amount I care about someone not/showing up is, charitably, about 3% of my caring, and the other 97% is whether I can plan around you at all. Passed on a shindig? Ehh whatever we can grab brunch next week. Totally fucking ghosted my invitation alongside 49% of the other people I invited and left me with Schroedinger's Party Size so I have to scramble to put together not just an event but make sure the event can accomodate a mystery number of guests? The next time we meet I will wrap you in a warm embrace and look deep into your eyes as I squeeze the life out of you. IF YOU DON'T FEEL LIKE ATTENDING JUST CANCEL I WON'T CARE WE CAN DO SOMETHING ELSE THAT'S MORE FUN LATER JUST STOP ACTIVELY MAKING PLANNING HARDER AND MORE STRESSFUL THAN IT ALREADY WAS
So the next time you're invited to something and semi-secretly don't wanna go but feel bad admitting it so you're kiiiinda tempted to put off RSVPing one way or the other: