Dougwalkabout has the correct on 2 points -

1. airline travel sucks (about as romantic as bus travel but with abusive security checks and the chance of falling to earth on fire) and
2. having clothes is a good idea - I always keep my shoes on while flying and I only assume what I have on person is what will leave the plane with me - if something goes wrong - say a fire and emergency landing - then finding my shoes or sorting through the overhead locker isn't going to happen, so wallet, phone, light need to be on me and I'd better have sometthing to keep my delicate little toes from get cut/burned/stepped on