Hey Vegas Lady, I give you the first hand info--if I was at work I might be the one taking you there. most flight do not go direct to las vegas but i could be wrong--usually a connection in chicago dallas los ang or new york. Needless to say it's long but if there is a break it helps.
not k nowing where your rsd i give you the general idea and you can ask me anything other.
Window seats on international do not give you more leg room and if you say you have a disability they will not give it to you anyway.--the bulkhead also does not offer anymore room and the armrest normally do not raise either. this is important to have--if you are seated in a row with your family and get uncomfortable you can raise the armrest and and try and get more comfortableand maybe get lucky with an open seat next to one of you. as anyone you will swell--but more--do not intake anything with salt--even drinks-it is my experiece that alot of uk residents like tomato juice--don't do it--plus there is alot of sodium in airplane food--bring your own--drink alot of water--by the biggest bottle after you pass security(you cannot bring any liquids through). most crews are not allowed to refill your bottle for sanitary reason and due to the fact that fresh water supply is limited. werar shoes that are expandable and extremely comfortable(in las vegas it is quite a long distance to baggage claim--call ahead and ask for a wheel chair--trust me you want one--just make sure when you check in at THE GATE that it is on your iteniary).keep any effected areas elevated as much as possible--lets be seriuos all airlines have cut out all extra space to put in more. stick your feet in the seat back. hate to say it but they tell passengers to walk around but it drives the flight attendants crazy and they might get testy with you up and about (just being honest) if you are making a stop in another location before you get to las vegas you will be walking(are riding in a wheelchair) a long way. forgive me if some of this is out of sequence just trying to remember everything to make sure your comfortable for your trip.
most hotels have wheelchairs that they allow you to use to get to your room or whilde you gamble in /their hotel--ooops forgot--this is me--approx 45 min before landing a cool air comes into the aircraft--that is usually when you will feel more pain. when leaving Las vegas--=WHEELCHAIR--but arrive EARLY--sometimes they will only allow the wheelchair person ahead of the security linme. in las vegas that line can be over an hour long.
I hope this helps--anything else just let me know--wish I was going--but im still off work because of an accident a passenger caused--so be nice to the crew--they will treat you well

cheers!!!!!!!!!!!!!!

flyaway!!!!!!!!!!!!!!!!!!