No, but after 100 or so attacks your attacks stop effecting the monsters. You have to move a few pixels to reset the counter. As for auto-bots. Yes they can suspect that you're "Botting" and d/c you. That itself is unlikely. But its also the worst that can happen tbh
I wouldn't do it, especially at mp3 or any area around there as that's a high traffic area for botters and GM's actually monitor that area. Yes, as others have stated, if you're doing any sort of automated action without your presence and someone reports you, a GM could check up on you and ban you for "macroing" even if you aren't technically using a macro and only weighing your key down.