I can help answer this, being a Pathfinder GM myself.<br/><br/>Drawing a weapon is part of a move action once you have +1 BAB, or a move action normally. So that would typically rule out a full attack without feats as far as I know.<br/><br/>Tripped enemies are not considered flatfooted in Pathfinder - they have just a penalty to AC against melee attacks and a bonus against ranged attacks.<br/><br/>If somebody stands up and provokes an attack of opportunity, they have all the penalties associated with being prone during the opportunity attack.