Less so

As in all jobs, everyone will instantly look you up on social media once you begin to see just what sort of person you are. And the person you are should appear to be a professional one. Clean up your profile, lock it down, doesn’t matter - just make sure HR can’t see your drinking marathon from the weekend. Similarly, don’t get wasted at the social event or Christmas party. Free drinks are great, people spending the next few weeks talking about how you spent the night falling over less so. This also applies to those times that you attend a business lunch or dinner. Be professional - don’t order the most expensive thing there, don’t start until everyone has their food, don’t spit food on the people you’re trying to sell stuff to. Easy, right?

Hello everyone. I have a mini-book discussing about how to starting out in the pharma industry. The author has explained several strategies to get successfully into related jobs (in this industry). In some parts, the author has adopted a humorous tone, and that's where my problems arise :/ ...

In the highlighted sentence, the author has said "Free drinks are great", and then he has said (somehow concluded): "people spending the next few weeks talking about how you spent the night falling over less so", These two parts sounds contradictory to me: I reasoned, if free drinks are great, and people (including you in the context) tent to spend their weekend nights drinking, Why will people talk about you experiencing such a situation to a lesser extent?

Thank you.