Hopefully, you will have a limo that the casinos will let stand in the limo area for a while when you "jump out" to take photos. I'm local to Vegas and have done the strip wedding photos with a limo and it wasn't easy. The limos are not allowed to wait around especially on weekends. So you need an experienced limo driver specifically for this. You definitely can't do it on your own.
I've worked at a wedding chapel and have visited almost of them here in Vegas. If anyone needs information or advice let me know. I'll help if I can.
I also had a disaster at the first chapel I was married in. So I'm renewing on July 4 this year. If you need a minister or photographer I'll let you know how they did for me.