This is a list sent to me by Deepti at DKGems when I posed a similar question re kids' activities on a Facebook forum.

Kidszone indoor play area
Bird park
Sunset cruise - aquamania
Pinel
Horse riding - sea side nature park
Puerto Cupecoy - restaurants with big courtyard.
Movie theater game room
Pineapple Pete’s game room
Rainbow - any grandcase beach is a great beach for kids
Lotterie farm
Sandbar restaurant with small play area
Coffee lounge if they are older
So Benedict’s great crepes
Reveil matin great crepes
Simba French side play area for kids
And new ice cream spot in town Luciano