Hisoka and Tsuna are both very open to this! (Crona will just be on a case by case basis, so if you still want zir then let me know and ze will pop into your chara's post :D)
IMPORTANT AWESOMENESS Hisoka won't be wearing his normal attire for this. Because Break will have come over the night before. And stolen his clothes. And replaced them with female clothing. Meaning dresses and such things. YUP.
Tsuna's the flailing mass of cuteness that will probably overreact and be all the embarrassed as usual. HE'S ALL, OH COME ON THE MISTLETOE BOTS AGAIN?!?! /SOBFLAIL. But he is, of course, all the open >D