I bet there's a huge a* plastic strawberry swing in chris' back yard and he and his family were playing out back there.
Hahaha jk, but I do think it's about his family though, this song clearly relates to a fond memory, and he seems like the type to value his wife and children very highly. Plus the line "Everybody was for fighting
Wouldn't wanna waste a thing" makes me think there was a silly argument going on, you know, you look back on moments like that and laugh about it. It encapsulates all the things I associate with a very loving family.