Forgot to mention: the day after that game, it was too rainy to play outside, so L, N and I played a full six turn game.
Same simplified rules but with two changes:
Leagues consist of a Leader and two Sidekicks.
L picked the two biggest monsters he could find, N picked three of the Lucid Eye Simians (they're very popular with young girls, apparently). I picked "Teddy" (Roosevelt) and some other white explorers.
I also let them pick the Plot Points, and the main Plot Point was a cat stuck in a tree.
Instead of Extremely Perilous terrain, we used the cards. However, the cards could only be used as Perils, not to get bonuses.
This turned out better than expected: the kids took great delight in playing perils on me and each other (to make it easier for them, I made sure to announce when they had an opportunity to do so, like when a model went into terrain or went for a Plot Point). They also didn't take it personal, which was good.
So I'm definitely using the cards next time I play simplified Pulp Alley, but I'll reduce the starting hand to one or two. Three cards was too many, since when you only use them for perils, it's really hard to run out of cards.
CAUTION: Before playing with children, put your cards into sleeves!
Long story short, they did great, and we were all impressed that we managed to play for one and a half hour. N got bored and dropped out by turn 3 (but she does that with all games), so I withdrew my League and took over for her.
She still had fun: she later said that playing games (Pulp Alley) with her uncle was her favorite part of her vacation. And I don't think you can get a better review than that, Phipps.