I always insert a line that says
If in 30 days “X” cannot deliver the promised players then “Y” company will forfeit all advanced payments to “X” for non-performance issues.
*Like a deposit* more than an advance….
of course, they don’t like this 
But I say… you don’t seem like you have much faith in your casino for as much faith as you say you have in my success. Your casino must suck if you won’t sign it.
