The door isn't invisible or anything, just, you know, it doesn't immediately scream "shady deals going on in here!". So a drone would be able to find it, but not necessarily tell you that this is where you'd need to go. But hey, if you can come up with some awesome way to make the Dragonfly figure it out, go for it! Like I said, this is just a framework. We play to see what happens. There's guaranteed to be someone inside the club who knows where the shady deals go down, though. That elf bartender over there looks hot... I'll add all this to the GM notes, thanks for keeping me on my toes. I don't worldbuild that often ^^

And sneak as many guns in as you want. The doorman knows who you are (hence "you're on the list), so he knows why you're all packing heat. But we won't be moving straight on to the mission, so there's no actual need to bring everything. Depends on how paranoid you are, I guess.

As for who plays the doorman: Unless you really want me to, you're welcome to RP him yourself. He's a nice guy, but he doesn't appreciate arrogant shadowrunners who treat him like crap :D it all depends on your character's personality.