$45 a night seems reasonable but it looks more like $45 an hour from that other thread!

I live in Vegas and some of my friends have kids so I can give you a referral for one of the local babysitters if you send me a PM. They'd probably charge you something reasonable in the range of $10-15 an hr.

I would take no responsibility whatsoever other than giving you the phone number of the babysitter so proceed at your own risk. That said, they're good friends so I doubt you'd have any problems.