Along with "CM with a name tag", add in "behind or next to a cash register". Because they make, or used to make, nametags that you could buy and personalize that LOOKED LIKE CM nametags.
Totally fun for the normal average Disney fan, but absolutely terrifying if you think a leetle bit too much about it.
So "look for a cast member with a nametag who standing at a cash register or popcorn cart" is going to be a good direction. Although they should also stand in that spot, and visually look for the CMs and get their attention.
DH was looking at a map once as a child at
Disneyland, and when he put the map down his family was gone. He stayed still, but looked very lost, and it was during that magical 70s time when characters roamed the parks alone. All of a sudden Captain Hook came up to him, DH indicated that his parents were missing, and Hook stayed with him until DH's family came back. DH still loves Hook for that.
So staying put and getting the attention of a CM is good.
That playground is terrible for finding your kid. I highly doubt we would have ever taken DS in there when he was younger. Last year at 7 it was bad enough; and this year he, and therefore we, discovered the Boneyard we'd heard about but never seen. Up the stairs/ramp, OVER the walkway, and into a totally different area! Oh what a joy it was looking for him!
Luckily we've always encountered CMs who were on the job when it came to watching kids. I was just about to go "tell on" some kids in that playground when the CM I was heading for started calling out to them to stop doing what they were doing.
But it is indeed a place where it's easy to get lost, and yep I bet the CMs think kids can't get out and therefore get relaxed. Alas they do get relaxed at that in/out spot.
They are right next to each other, and they should have someone on both sides. And of course you guys get the awesome fun of being of different races (well, I assume you are not Asian...maybe I'm assuming wrongly?). DH once had the police called about him while he and DS played at the playground of our apartment complex. He heard the woman say "there's a man here who doesn't match any of the children". At the time we were living in a city KNOWN for the Korean population, and we feel that the lady could have been a bit broader in her concepts of family, or at least watched for when little red-headed DS would go to check on his black-haired dad every 2 minutes (as he did when he was 2).
So even if they were looking, they might not have gotten the right "who is the grandma" or even "who is the mom" answer, because the little bit of J's face that I can see beyond the crown doesn't look overly like the little bit I can see of M's face in the pictures. And of course you know this from your own experiences, probably, with assumptions I'm making (and in the picture you posted on the first page the whole group appears to be caucasian and I think you said you're in that group), from when M was young.
Gosh my replies in your TR are long.
Well THAT is good at least! And FWIW I'm 43 and my voice sounds like I'm 12. So maybe she was much older than you thought. Hope hope hope.