I can’t speak for trans people, but i would expect that the best course of action is to be yourself and dont mock anyone. You can rib and have a laugh, but dont open with a whole script of trans jokes. Get to k ow them, like you would with anyone and learn the boundaries naturally. If you think of them as different, you will be on edge the whole time and are more likely to mess up.

If you make any mistakes, just be sure to apologise, and i am sure any of them would understand. Ultimately, as far as i understand it, trans people just want to be accepted and allowed to be them selves and be a part of society. The only way that happens is if we dont treat them differently, whether thans positively or negatively.