Fun things to do in place of cocktail hour

Summer

So I'm getting married. We are doing a very small wedding with family. There will be 24 people in total there if you include us. 4 of us are the bridal,party 20 are regular guests 10, from my side, 10 from his side. We wanted it to be small so it was more intimate. Anyway, we don't know what to do in between the ceremony and reception/dinner. We don't want to do a cocktail hour. We were thinking of having them do a fun activity that we pay for, but I'm having a hard time thinking of something that lasts an hour that they can do in casual-formal wear