Wales' players have been asked not to bring their children onto the pitch after Wednesday's Euro 2016 semi-final because of safety concerns.
"It is a European Championship, not a family party."
Wales, who beat Belgium 3-1 in the quarter-final, face Portugal in Lyon.
Tournament director Martin Kallan said: "A stadium is not the most safe place for small kids if fans invaded the field, and with stadium staff operating machinery on the playing surface."
A Uefa official said: "It is nice pictures. We are not 100% against it but we are cautious."
