So I might just be missing something here but how exactly does infiltrating as a partycrasher/stowaway/etc. actually work? It's pretty clear there will have to be some time not in their masks (leaving the ship and entering the Orrery for example) so wouldn't they be recognized as not belonging then? And how would they have their own room and mask set up if they're not even supposed to be there?

I'm sorry if I'm just overthinking this...