If you include me in a group message/request, I will reply to you regardless of whether or not I can be involved. This goes for improv shows, dinner, brunch, adventures, casting extras for a sketch, and any other event where an RSVP may even remotely be appreciated.
I’m doing this because it is the sort of consideration I hope to receive from my friends, and because I’ve made some pretty large meals recently that only I have ended up eating.
It doesn’t take long to say “no thanks”, and I will really appreciate you doing so.
P.S. I’d really love it if you came over for dinner sometime.