I'll add when I worked in quickservice food and beverage, they told us we had to decline 3 times and then we were allowed to take it. This usually had to do with tips, but I guess if you were offered something else you could have accepted it. Never happened to me, but characters are quite different as well. I was unaware we couldn't ask for food doing a dinner meet and greet (was totally joking around when I pointed at some shrimp and pasta at the buffet) and they gave me a to go box anyways, but I'm about 90% sure I could have gotten in trouble for that. (also note, this was when I worked at Universal, not Disney, so different company and different rules)
I'd say take it and if anything give it to their greeter or Peter Pan and see what happens, he'll probably be happy to get it.
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