The spycam is all you need for that quest, Mia will at some point do something and then you have a prompt to record it.
Bartender is what you need to continue sages quest, do some main quests. I'm guessing you haven't been inside the bar yet? After you do some side quests your partner will ask you if you want to go out and drink and thats how you meet the bartender. So maybe go check at your office and see if he will invite you out.