I'm down for either, or even both if you wanted to do one thing during the event and one during the moonblessings! Chatting in the cells is definitely an option since Ren's going to be trying to keep an eye on how everyone's getting on while trying to ignore his own massive discomfort with the situation, so it could make for an interesting dynamic between them. Trickery would also make for a good contrast with their first thread, since I imagine under the moonblessing Ren would be a bit more willing to show that he is a trickster type and not just be faux cute like he tends to be with people initially.