Get over yourselves if you think it is really a "first class"
Tomorrow I will be in shorts and flipflops in 1st and enjoying it unless some pinhead tells me that I'm "not good enough".
Take a transatlantic flight in business and 90% of the people will have their shoes off before takeoff, hell you usually get a pair of socks in amenity kits..
For a 2 hour flight, who am I to tell someone not to. I keep to myself and don't harbor any elitist attitudes....
As far as coach using the front lav, whopti doo. seriously. 75% of AS flights are 2-3 hours and you should be happy if this is the biggest gripe you have in life.