Just got info on the Beau Riviage (Biloxi) opening. Here are the nons:
No smoking at tables
No valet
Housekeeping of room on request only
No in-room dining
Maybe these are temporary until things pick up, which was kinda sorta suggested but not explicit about that.
The Beau has a lot of tables. Lots of $10 minimums and you can always find some 3-5. I'm sure time will tell how these go over.
The no smoking at tables will be a biggie, one way or the other. I don't know about the other casinos.