To have your foot pointing in front of you? Yes, that's okay in latin if your partner isn't right there to collide with it.
To arch your back - no, that's not okay in latin either. You need to keep your center toned there even more, since the open positions invite more scruitiny of each body.
Ditto for american smooth. Though it's an interesting question in smooth, if you are doing something resembling a basic closed figure in open position, if you should reach your feet ahead more, or maintain the same leg timing required for closed position.
Also, in terms of latin lazy belly syndrome looks far worse in a skimpy two piece costume.