The 'training period' is a bunch of computer work, maybe some paperwork you have to do. I was with CVS as an intern over 2 summers. Honestly, it's been a year since I've worked there and don't really remember clearly what exactly you had to do, but when you do finish the 'training', you get bumped up a year in your title (ex, from a yr3 to a yr4... they have a crazy yr system...). It took me about 2 wks-1 month to finish, as far as I remember. Then I got $12 instead of $11. lol. woot.
They didn't raise my wages properly and I had to contact the DM to get it fixed, but I was given the difference in my paychecks so wasn't cheated out of my extra $1/hr in the end...
You can still do whatever the pharmacist does (except the final check) even if you don't complete training. That should be okay as your title of "intern". But they'll let you know, maybe check your state law too...
Any questions, let me know...
Congrats on your internship!