Wore a nice polo shirt, newish sneakers and faded Levis. Brought proof of vaccination, passed a quick forehead-temperature check and we were inside. Didn't pay for admission, but just went into the one first gambling room.
It's gorgeous, and well worth the trip. Gambling on slots is easy and I found the odds excellent. The staff couldn't have been nicer. Unforgettable.
(Not to mention the informal car show held outside before dinnertime. Car buffs will go nuts with dozens of unique vehicles driving up.)