Betty, I have chosen not to bring my 10yr old daughter. Last time I was there there were 3 kids under 5. I know I can relax and enjoy myself more without my daughter, but I wouldn't miss it and would bring my dd if needed.
No, there's no security except the security of 40 or so women who won't stand for any shit. There's never been a problem before. In fact eve at conferences where trans have turned up to picket I've never seen more than 2 of them and all they did was hand out fliers and were quite polite with it.