My first DH game schedule for tomorrow ballooned to 6 PCs. If you have run DH for a large group: what are some things I should be aware of or otherwise keep in mind? Thanks.
I've only run it for 4 players which I think is normal rather than large but the following points come to mind (you may already have considered all of them of course).
Make sure you rebalance encounters for 6 players. Some of them will be quite large as a result - also I'd say make sure the monsters in those encounters represent multiple types of monster (i.e. skulks, bruisers, solos, etc.).
Make sure you take 6 Fear to start (and add 6 fear to your 1d4 roll on a Long Rest).
Be aggressive about spending Fear, because with 6 players wanting to do stuff, you'll probably get a lot (44% chance per Duality roll).
Strongly encourage the players to voluntarily pass the spotlight around, and to pay attention to who hasn't had a go - it's much more likely someone will get kinda naturally given less spotlight time with a larger group. And when your turns end, because you stop spending Fear or w/e, try and make sure you ask a player who hasn't gone recently. Seems obvious but it may not be. I convinced my players to pass to each other aggressively by simply saying if the same person kept taking goes I might see that as a Golden Opportunity to do make a hard GM move.
This may already be dealt with, but with 6 PCs, if you're using cards, you may need to ensure PCs who have overlapping Domains take cards so that they both get cards, if you see what I mean, or you can just have people write cards down (there's a sheet for it IIRC) where they overlap.
I think spotlighting is going to be the main issue with a 6 person group.