Just curious but why do you think the Raiders will be a disaster in Vegas? I think it was terrible that the Raiders left Oakland but I also think Vegas will do very well supporting a team. I lived there for a few years and residents were always looking for things to do outside of the casinos. You have the local resident support, you have visiting fans (who wouldn't want to go to Vegas to watch the Bills play) and you now have Raiders fans coming in for home games.
The Vegas Knights sold around 13,000 season tickets. Yeah its season one, but I think that's an indication showing the support for a local team there. Your talking about 10 home football games. Raiders will do just fine in Vegas. Of the three teams that moved this is the one that I actually think will thrive. Still sucks the Raiders left Oakland though but they were probably the smart ones to leave that area.