You're likely hired.
Tips:
Show up 10min before your shift, every shift.
Don't call out for your first 30 days. If you can't work, show up anyways and show them you're sick.
For the first 30 days, be a good little Yes Man. The word "no" should not be in your vocabulary unless asked "Do you need any help with that box?"
Most of all, just be there and put forth an effort to keep pace with the workflow.
Just being on time every day for 30 straight will likely get you a permanent PT job, provided you don't completely **** up the truck(s) you'll be loading.
Forum tip:
There is an "Edit Post" feature in the bottom right-hand corner of every post you make here. If you wish to add something to a previous thought, feel free to make use of this feature instead of quintuple-posting.