what is a good number of people for a reunion

A few people? Is this two or three family's? If this is the case go to each others house. You wouldn't even have to think about a pot luck! Grill. Bring your own beverage. Four or five families? I'd still do it the easy way. A reunion shouldn't mean big hoops ever.

Some people have huge families that live all over the country. Others, like mine, are very few left and too old to enjoy something like that. I think any body that wants to take part and will committ to be there is enough. It is a reunion not a party. Young and old. As many generations as are possible. That would make it a really good one.

in my opion,the smallest number of people for a reuion will be around five to ten,if the number less than five,i find it a little tedious,but if the number more than ten,it's really hard to greet,to entertain them,i feel it's a little noisy,just my suggestion