Maybe. But, think of this, when you drink any liquid, what goes in must come out. What if Hannah was upset, crying, needing a bathroom like NOW? Now imagine JM walks up to her says oh things can't be that bad, sunshine! Or, let's turn that frown upside down! What's going on? Maybe at that point Hannah says she needs a bathroom so he escorts her into the Tempo for that reason. He orders himself a drink, and could have ordered her a coke, coffee, water, and suggests she sits down for a bit, and talk. She's in a public place with others around. So what's the harm? She could have said she got turned around, and feels lost, or her friends are waiting for her at such and such place. He offers her a ride there, telling her it isn't safe to be out walking around by herself that time of night...
In that theory, patrons might likely be drinking themself and not notice them leaving, or even being there! And up to that point, nothing illegal or harmful has occurred. Just two people, sitting at the bar area or in a booth/table talking. Nothing unusual at all. In fact, thinking about that now, it's surprising anyone did take notice! Unless they noticed Hannah's top. That would be the only thing that would have caught my eye, not because it was provocative, but because it wasn't a top I'm use to seeing. But even if someone did notice them, again, nothing illegal had occurred!!
It's what went on after that...whether he did drop her off somewhere, whether she left walking, etc. It will be interesting to find out at what time JM's car was noted to be leaving the area after the Tempo incident. If it was immediately, or if it appeared to take a few minutes after getting to the car before he left, etc. It's even possible Hannah DID leave there walking, and he followed and picked her up. We don't know! We hopefully will know more evidence soon, but sadly, we're a long way from finding Hannah. I keep hoping to hear LE say they have his vehicle turning into his road to the apartment at such and such time, and that will close the gap as to how far away Hannah could possible be, IF she was riding with him. Again...only a starting point. Just not enough clues to figure out further at this point.