Are these things happening by where you live? Around here they are becoming popular
Basically it is a congregational effort to get as many people as possible to make a full day of "field service". They'll meet at 7:00 am at the KH and eat breakfast there at the hall. The breakfast will be huge (pancakes, eggs, sausage etc) and will be coordinated by some of the sisters. Then they'll go in service til noon. Then they'll meet back at the KH for lunch. Same thing. (chicken, potatoes, beans etc). Then they go back out in service til 4:00 or so. Then they meet back at the KH for some sort of dessert. They try to make it as "fun" as possible to get people to want to participate.