I would guess last minute like the other casino areas. But you might find some interest in Tupelo or even Columbus, Starkville areas if timing is right.
You may want to send a PM to Marie (aka Wildcat4fun), She is on the Coast now but I believed lived in Tunica for some time. She may be able to shed some light on the situation up there. Seems like it would be ok because of the close proximity to Memphis also ? Good Luck.