Is it okay (Lechatchila/Bedieved) to have a Sukkah with all 4 walls of 10 tfachim tall lattices and the rest is open?
It is usually OK Lchatchillah. Some suggest having the walls reach the schach as not everyone is expert in these matters. Sources: ראה ערוה״ש תרל, כא: וגם יזהר…