...get acclimated to the online experience? It even says in the description that it's teams of 3 humans and 3 bots. Yet in my entire time of leveling up to rank 10 in Boot Camp, I did not see one single bot. It was 6 humans vs. 6 humans every single match. It played EXACTLY the same as any regular online match. How exactly is that supposed to help newcomers?
No it's ranked up to level 10. Your stats aren't saved though. You can continue to play objective modes past rank 10 but you only receive 1/2 the XP.
As long as you don't leave the lobby after hitting level 10, you can stay in Boot Camp as long as you want. Although you'd have to be pretty lucky not to have a random freeze.