HOW TO CHILL
So, party time! Hopefully the weather has co-operated. If not, contact your guests and tell them you will be re-scheduling. Indoors is not an alternative - it is not condusive to social distancing.
If the weather has co-operated your guests will be texting you when they arrive. When they do, ask them to go to "go around the side/back" (as opposed to through your house).
Greet them there.
When you greet them, stay 2 metres apart, no hugs, no contact!
If they brought anything (food/drinks) ask them to put it on a table (which you have designated for such a thing).
The same goes for when the party is over, no hugs, no contact!