There was some surprise on the board when I said how Main Street Station and their marker policy works. I took out a marker on 12/27 and didn't repay it. So about 10 days later I got a billing slip from MSS with a postage paid envelope. I mailed them back a check after a few days to cover the marker. That check finally cleared my bank yesterday, 1/23. Others have said that with some casinos, if you don't pay it back after x number of days, they send it to your bank to be cashed as a standard check. Just passing this along as a fyi.