At MSS and the Cal there are many different sub levels of player status based upon your play.
Decent mailed offers start were you are at 3 nights anytime, invitations to mid level tournaments and $40 in food. For this you need to play 3000 plus coin in. You get the same offers as I do. Higher offers have free play instead of food starting at about $25 to $75. This is the highest I have seen on mailed offers that include rooms. On higher offers you will also get four free nights instead of three.
Slot play counts much more than VP for receiving offers. When my Mom was playing dollar slots at about 3000 to 4000 coin in per day, she was getting 4 nights anytime, $75 in free play and meals books. This offer is would probably require 7500 to 8000 coin in per day on VP. Starting with these offers they wanted her to reserve with a Casino Host.
At higher levels, probably 10,000 coin in per day VP you would qualify for a Silver Card for meals in addition to free play and meals.
Locals get more free play and food instead of rooms, I saw one offer that a $1 VP local received for a month that included 200 in free food and 300 in free play. This was broken down into equal amounts each week.
I have heard that for the MSS and Cal that the day starts at 3 A.M.
There are many different mailed offers. I have seen offers for more free play but one less night than someone else's offer. You can always call the direct marketing at MSS. They will not give you specific information as to how much coin in generates which offer, but will answer general questions.
Based on my experience per day coin in is important, and trip total is important. I have heard of people getting lesser offers if they play one day only. I tried using my free play offer for the Four Queens and gave them a normal days play as was downgraded on bi monthly offers
The Four Queens to my understanding is from 12 midnight to 12 midnight, but an odd thing happened on the one day I tried to play above. I played a little after midnight to about 1A.M. to start my day, then went to sleep, but when I checked with a host it was not credited to either day. This does not matter over a period of say three days, but I always start a trip at about 6A.M. to begin playing. About three thousand coin in gets 3 free nights anytime 40 to 80 in free play, usually no food, invitations to tournaments. At close to five thousand a day you get 200 in free play food in the coffee shop and the Brew Pub every day. Higher coin in gets the same three nights, but additional food options including Hugo's.
If you have questions on what coin in is required for offers you can call and ask to speak to a host at the Four Queens. They seem to have about 5 to 6 standard offers.
Regarding getting in late and how it affects the daily average is a problem, Sometime I solve it by just paying for the room ( Don't use Casino rate as they expect you to play you daily average). Both Casinos give a 10 percent discount for AAA. Four Queens has frequent sales on rooms on their website. I have paid as little as 25 dollars for a room at the Four Queens and about $30 for a room at the Cal midweek. Sometimes it pays for itself as Southwest flights are more expensive on Fridays than Thursday, so I actually save money by leaving closer to midweek.