Not directed at the OP, but the range of posts that will likely follow...
Yes, they're strict. Yes, they'll double measure. Yes, there's a chance that even if your kid makes it one ride, they may be denied the next (or a different ride). Yes, if there looks to be something "up" they may request specific things (hat off, shoes off, etc). Yes, sometimes people slip by. Yes, sometimes a CM let's a child by when they shouldn't. Yes, some people cheat the system. Yes, there are sometimes inconsistencies. No, your child will not die if they're an inch short and get let on. Yes, there are tolerances built in. Yes, a CM may be terminated if they are caught letting a child that doesn't hit the bar get on. No, they are not trying to ruin your day by not letting your little one on. Yes, they'd love it everyone could ride perfectly safely!
I think I got them all