When you host dinner at your house and invite someone, as a host, do you normally let them know if there are also other people invited? And I don't mean provide each guest with a full guest list and menu - I just mean do you ordinarily let people know if there are going to be more people at dinner than just yourself (the hosts) and them?
As a rather introverted person, if I'm a guest, I like to know what to expect when I go to someone's house for dinner. I need time to mentally prepare myself for a group of people vs. a more intimate setting of us and the hosts. So I try to provide my invited guests with that information if it's more than just them.
I absolutely do appreciate any and all invitations I receive, regardless of the type of event - it's ultimately about spending time with my friends and I'm happy they want me there. And if I am surprised by a roomful of strangers, I can graciously roll with it and have a good time. I just prefer to have time to get in the right mindset, so I try to provide my guests with the same.
What's your general rule of thumb?