1 nous avions chaussé nos après-skis: I’m guessing this means they were shod in snow boots, but was curious why après-skis is pluralised with an s on the end - nos après-ski was marked wrong.
2 Les enfants étaient tout excités : I should know, but if the children were girls, would it be tout excitées or does the adjective have to agree with "enfants"? It was a good opportunity to revise the complex rules around "tout" modifying an adjective!