Welcome Robyn, I believe both @auntieoakley and @gingerw were diagnosed as adults and may have some pointers to offer. I think knowing more about the diagnosis also helps those around you understand.

@jonperyer, I extend my welcome to you too. You mentioned that you are just learning about living on the spectrum, too. Did you only recently receive a diagnosis?

Declining social invitations is certainly everyone's right. How do you decline but also let people know that you enjoyed being invited and included?