As previously stated, if they like you, they'll qualify you regardless. What that means is; show up early in a good mood "yes sir no sir", no whining or complaining, no late commits, no missed pickups. Show management your heart is in it. My boss made sure I could scratch or bonus all while coding out a full hour lunch and not recording during that hour. My trick was to code out ANY downtime, even for a 5 minute restroom break. Run hard, yes like a rabbit but do not record in travel or in idle. No seat belt or back firsts. Once the 31st punch on diad, you're in like flint. Do your best, if you've made it this far, you're likely to make seniority if you do these things.
Good luck, I know it's stressful.