anyone here try and shoot at any of the hotel wedding chapels in vegas? are they strict?

Not sure but definitely find out in advance. It might just be resorts & casinos, but I've heard that alot of places there only use their own in-house video production, and the bride & groom can only choose that option, not bring their own. Again, it might not be a factor with chapels, but I'd call. Would suck for you to go all the way out there, and they don't allow you to shoot.