You guys are great parents. My mom NEVER would have let me do this at 12. Geez, I'm 33 and my mom is FREAKING out that when I go this summer with work, I'll be spending half a day at Epcot alone. She's asked me not to.![]()

Your mom doesn't want you to go to Epcot alone... and you're 33? dude, time to cut the cord.![]()

Here's how I'd do it if it were my kids:
Send both kids with lanyards with clear pouches on them.
The oldest carries the tickets in her lanyard and puts the tickets in the fast pass machine.
The youngest gets the fast passes as they come out of the machine and puts them in her lanyard.
Since both are responsible for just 1 part of the transaction, they'll be more likely to get it right! And since they both have specific jobs, there is less chance of a fight.