DS is in a friendship group of 7.
His birthday is coming up.
He wants to invite all of them to a "garden gathering".
I am an inveterate rule follower and am really struggling between the rationale of "7 rather than 6 is very little extra risk" and my must-follow-rules inclinations.
Would this bother anyone else? Other than it being "the rules" is there a good reason why we shouldn't have 7 people in the garden?