When you go to the meeting, you have to ask questions.
That is the purpose of meetings.
Sometimes the questions will piss people off.
So be it.
Remain calm, get the answers and make a positive impact.
Be prepared, know the correct answers to the questions you will ask beforehand.
That is very important.
Make sure you can get knowledgable people on the phone to help you if need a correct answer that you did not think of.
This is only to HELP EVERYONE.
If you read nothing else on this site in the next 4 days, it has to be the words above.