You should probably post this over on the DL side of disboards, this particular section is for WDW only.
Now all that said, I have been to DL many times and ate at Cafe Orleans last year with my 11 yo dd. She did order off the kids menu. It was no problem but the portion was very small. I want to say she got some sort of chicken and it was a chicken leg and a tiny side. Luckily, my Monte Cristo was HUGE and she shared a bit of that with me.
At DL and WDW, if its not a buffet, its generally not a problem to order a kid older than 9 a kids meal. I've done it all over both parks and in the resorts.
We really enjoyed Cafe Orleans btw. Hope you do too!