My time was decades ago. I’m sure things have changed since, but boot is likely not much different. Once past boot, it is a whole other world. There are numerous training facilities for many levels and areas of training. There is regular navy, where people do the work they,ve been trained for. There are jobs at sea, there are jobs ashore, and most people spend time doing each. Boot camp is isolation, keeping new recruits from family, friends, recreation, anything which would distract from learning exactly the same things the same way. Its a little like brain washing, except everybody goes there on purpose, for the same basic reason, to be in the military. Training has to start out rigid. It has to be focused. Lots of military personnel don’t see combat, but the basic job description is being ready for war should it happen. Training is serious business, focused. It has to take place quickly, so that when war does happen, the people sent are as well trained as possible, quickly.
It is not a place for people who want to fuck around with jokey little side interests.
Once leaving boot, people live their lives again, and each others’ :-).