An unrelated breakfast question here.

I like fresh squeezed orange juice which one doesn't get in a lot of hotels, instaed there is some ghastly concotion of sugar and food colouring. I carry a hand juicer with me and squeeze a couple of oranges which almost every hotel has a bowl of.

Nobody has ever actually told me that I shouldn't do this but on more than a few occassions I've seen the staff discussing it with much pointing and gestures.

Am I doing anything inappropriate, except for pointing out how bad their juice is?