Would you pay MSRP for a 2018 Chevy when a 2017 is thousands less? You would if you wanted the 2018 Chevy. If not, you walk away from the deal.
If they ask you how old your son is, and he's 3, and you say 2, then yes. And if you get away with it at WDW, then yes again. As for your son, the growing up to be a criminal thing is still up in the air. But if he grows up watching you lie and cheat, what do you think he'll be? Womp womp.
Yes, I know this horse is dead. But it seems like you have to beat the horse one more time to get some people to see the real point.