well you seem like you're mind is set. I will tell you though there will be times where you feel like you made a mistake in signing the contract. A lot of ******** you have to dish out, at time's you'll be bored out of your mind depending on your MOS, which one did you choose btw? If you plan on getting out of the Marine Corps after four years or 8 choose an MOS that you can use outside in the real world. As for me we don't do jack **** here in the united states, my job requires us to be in war. 1371 Combat Engineer, we are the jack of all trades in the Marine Corps, we clear minefields, we blow **** up(demolitions), search for IEDs and we're construction.
You say you arw out of shape, if you can't do 3 pullups, 100 crunches in 3 minutes nad 3 miles under 28 minutes I suggest you put off bootcamp for a few months and work on it. You don't want to be stuck in Bootcamp longer than you should. Too me bootcamp was pure mental, can't be weak and can't let the drill instructors break you down. Do what you are told and you will be fine. Btw are you on the east coast or west coast?