Hi, I’m Rie,hosting in OKINAWA Japan.
I'll share my ideas from that meetup.
We had a meetup on 2021 April 22.
I prepared a map of our island and had participants pin the location of their listings.
At that time in Japan, it was mandatory to wear masks when gathering in large numbers


So I took a Polaroid picture of unmasked smile face at the reception
I put it on the self-introduction card and posted it.
The font for the self-introduction card is Airbnb font.
You can make it below link
https://airbnb.design/cereal/
Taking a Polaroid is a good ice breaker, and knowing where the listing is makes it easier to have a conversation.
Hope this helps with your meetup!