Usually the speech is tailored to our usual community and stomping grounds back on Midgard, but you've joined at a very exciting time! Lucky you. Aye, you have been swept up by an entity of unnamed, unknown variety and have traversed dimensions/worlds/realities/whatever-you-so-choose-to-call-it to here. Here being aboard a space craft with a chartered course to who-even-knows-where because Reasons. Reasons being beyond everyone's grasp, as well.
Don't provoke any Avengers. Don't harass the androids and cybernetic types. What else? Don't get addicted to Elven wine, I suppose. That may merit mentioning in your particular case.