San Manuel Indian Bingo & Casino, Can Security guard have power to get kids and me out from parking lot?

3/11/08 at 17:00 I am a asian, I and my kids was waiting at parking lot at casino for pick up my grandmother, who is lose her potket when she came to gambling , we was waited about 15 mins. Gurad came to me and told me to leave because their rule was not allowed kids stay in parking lot more than 15 mins. I was leave beause I afraid but after that I thinked this was not right. If we are american I believe we can stay just in parking lot, So I am argue, this should have someone responed. San Manuel Indian Bingo & Casino was not frindly and rude.