Here's a link to the NV rules page: http://gaming.nv.gov/stats_regs.htm
A while back, I was not allowed to double after split at a downtown store. I called gaming (if you play a lot in NV, it's good to have the number programmed into you phone), and was told that's not a rule, like payoffs (3:2, 6:5, etc.) that has to be displayed. It does have be in a book in the pit, I was told.