If I absolutely needed to go, I'd get a one-way rental car. That should be easy to do on LAS-LAX.

I actually had one of these choices a month ago...a UA cancellation after a weather diversion. In AMA...flight destined for LBB...the minute I overheard an agent talk about starting to make phone calls to arrange a bus, I went directly to National and got on the road. I'm guessing I had already returned the car in LBB before anyone boarded any kind of bus in AMA.

If I didn't absolutely need to go, I'd accept the hotel and fly out the next morning.

There's no chance I'd get on a bus in this scenario.