Most of the time, the “rules” for summer parties and backyard barbecues are pretty simple: just have fun, be yourself, and relax. These rules are great for gatherings among friends and family members. But company parties and neighborhood gatherings are not the same. When your company sponsors an employee day of fun or an outdoor barbecue, make no mistake:you’re still at work. You’re outside and you’re holding a cold drink in your hand, but you’re still in the office, you’re still on the clock, and everything you do and say will find its way into your next performance evaluation, directly or indirectly. So behave yourself. Keep these 10 rules in mind.