The luncheon is referred to as a "kondankai" (懇談会), a social gathering, in the original script. When Hikari sees what the luncheon will be like, she makes a pun that it's more like a "konnan-kai" (こんなん会), a "troublesome" or "stressful" gathering, than a kondankai. The dub doesn't bother trying to adapt this pun.
Dawn: Eek! I'm not hungry!
Hikari: Social gathering...?
Hikari: Eh... Stressful gathering!
(ヒカリ): いぃ～っ！？ こんなんだい！