@Bryan - I don't consider everyone larger than me to be fat, fyi. I'm grossly underweight. Sickeningly skinny. Believe me, I realize. I am not "normal". So don't take my comments the wrong way. I'm sure you're an "average" size person, not that it matters at all anyhow.
And stand on the escalator all day long if you want, that doesn't bother me in the least. Just make sure you allow room for folks to walk past you if they want to (if the escalator allows it). I know what it is to be sore and tired and want to stand on an escalator. After some of my races my legs were so trashed I had to walk backwards down the stairs to the blue line and I would have given my soul for an escalator to stand on. No harm no foul there brother.