Assuming you and your child do not intend to become drunken laots who decide to fix all their companies problems half way across the Atlantic, you will be a blessing by comparison with even the occasional upset from your child.
Just had this experience on BRU-YUL on Saturday and FA made it worse by chumming them up when more drinks were delivered.
As per previous post, manners please in a confined flying cigar tube.
Good luck and have great trip