To have lawn games or to not have lawn games?

We know that our photos are going to take at least 3 hrs after the ceremony and we will have pre-canapes avaliable as well as the bar... my mum seems to think this is enough. However i still like the idea of hiring out some games for the guests to pass the time... we won't have too many children there and everyone is family so I'm just looking for some advice as to whether its worth me spending the money on it and if people are going to use them?