Vallorcine has a small playground near the train station and there is plenty of free parking on site. There is also a basketball/football terrain just next to the playground.
*2018 SUMMER UPDATE – sadly the bouncy castles in Vallorcine are no longer in operation! / over the summer months, the green space behind the playground and next to the river becomes a small paradise for children (and their tired parents), as a bouncy castle appears, a small playhouse, a ping-pong table and ponies too . . . / and lots of tables, chairs and beanbags with parasols . . . / with lunch, you can get an unlimited bouncing pass for 10€! / pony rides coat extra;