I just walk up and say "welcome" and explain that it is a group or one person show . Then either they nod and smile and walk away, or they want to chat. I used to help run a neighborhood art association and got in the habit of approaching people I don't know as just part of the job.
I am not sure how to approach people sometimes. I have gotten better at it after over a year of showing but this was a different environment.
I just walk up and say "welcome" and explain that it is a group or one person show . Then either they nod and smile and walk away, or they want to chat. I used to help run a neighborhood art association and got in the habit of approaching people I don't know as just part of the job.