Convert the remaining space in the restaurant to a kids soft play centre.
Hot dog / burgers / nuggets / fish finger & chips & beans / peas would be the menú del día and served in a small tabled area.
There are loads of shops around the ground these days, women love shopping and it’d be a great place to take the kids whilst they (parents) catch up with the latest gossip with their friends.
£7 a session at Cheeky Chimps.
Extra charge for food, obviously.