On time vs in time

Max is a punctual person. He always arrives (a)  

He arrived just (a)   for the movie

The transport system here is very efficient. Buses always arrive (a)  

I hope I make it there (a)   to say goodbye to him

The bell always ring (a)   of the lesson

The meeting is at 9:30 a.m. Please be (a)   . Don't be late.

There was enough food left. We arrived just (a)  

I sent the package on Thursday, so you should receive it (a)  

You're just (a)   We've almost left without you

We start and finish (a)   . That's why I'm already here