My daughter will be flying on one airline to Vegas and switching to another once she lands before continuing on home. Our preferred airline doesn't fly to her original destination so that's the reason for the flight change. Will she have to go and recheck in again when she lands in Vegas or can she just go up to the other airlines gate and check in? I'm assuming that the first airline can't check her all the way through since it's 2 seperate airlines? She'll just have carry on luggage so she won't have bags to worry about{would they transfer them from one airline to the other if she decided to bring a checked piece of luggage?} Any help is appreciated!