If you're trying to be as close to a casino as you can, then really you should just disallow both of these things. You'll never see a dealer look at your cards at a casino, and no one will be yellin CALL, FOLD, RAISE standing away from the table at a casino.

However if you're going to allow these things to happen (since its still a friendly game), then I'd have to say "show one, show all" doesn't apply if the dealer looks.

For the 2nd one, I would be very annoyed if someone was mouthing his play through a window. There's no way I could stand that. I'd be annoyed as well if someone were 5 feet away saying CALL, but not quite as annoyed. Either way, I don't think I could allow this to happen...I"d try and make it a general rule that you have to be at the table to play.