Hi all. Can't remember the last time I did a multi-city itinerary, so please excuse me if this question has an obvious answer.

I need to go to Vegas for a trade show in April. Normally I would do it as a round trip, but since I'm going to be so close to LA/my hairdresser there & haven't found a decent one where I now live, thought I'd do a morning flight to LAX, go to Bev Hills for hairdresser, take a dinnertime flight to Vegas, and then at the end of the trade show fly back home. The dif in airfare is only $35 doing multi-city vs roundtrip.

On this particular trip because of length & some other reasons I actually do check luggage. I'd like to think that I could check in GRR-LAX-LAS since it's the same day, but there will be about 8 hours inbtwn flights. So - does that mean I need to pick up the luggage at LAX or will they check it all the way through to LAS? I can deal w/ either (although I'd prefer checked all the way through). I just need to sort out the timing from arrival at LAX to hairdresser (ie, pick up luggage & head to car rental vs getting off plane & heading to car rental) etc.

On the return from LAS-ORD I have to choose between a 757 or 319. Given that 100,000 of my closest friends will be leaving that day & I'm only 1P, I have a snowball's chance in hades of clearing an upgrade. Other than a trip to LAX last week when I was on a 767, this will be my first trip in E+ & wondering for the length of the flight, IFE, etc, which is better - or does it even matter? The 757 gives me a longer layover at ORD, but assuming there's a FTer around to guest me in I can burn a couple of my drink chits at the RCC, so connection time isn't a big deal. The 319 might be a bit less expensive.

BTW - Allegiant moved into my new home airport & I thought due to them UA might drop their Vegas prices, but no such luck.

Any input appreciated. Cheers.