Dibble,
Simply put - you do not have the qualifications - nor do you have the authority -to make such statements.
If uninvited players are allowed to attend the various events - then I hope that many of the young men with dreams and some skill do just that.
If uninvited players are not allowed to attend - then they will be turned away.
Your "advice" is nothing more than blather and drivel IMO.
I know of many univited young players - who were drafted. From the late 70's up to last year.
If those young men took your "advice" (derision) - perhaps they may have never had the experience of playing professional baseball.
IMO - You should keep posting the links and the wacky funny stories - and stay away from serious stuff.
Just my opinion.