Yesberry OP t1_j1zu9vu wrote

I agree with the first three, but the last two would be a bit tricky. We don't know about their biology to make the assumption that they will appreciate sight based cues, or at least that in the visible spectrum. Without a common language humor becomes meaningless. (Think about going to a stand-up in a language you have no clue about, let alone any cultural overlap.) It's first contact, so we don't know most things about them.