My son had a guaranteed A school, and he spent 18 months in training at Pensacola. It was like a dream come true. They went to school during the day, partied at night, and spent leave time on the beach. He went snorkling, riding on a jet-ski and lots of other fun things. His unit also worked at an evacuation center during a hurricane.
He was trained to be an Aviation Technician aboard an aircraft carrier.
When he got there, they didn’t need any AT and he got deck duty, heavy labor involving dragging giant chains across the deck, when he wasn’t working in the kitchen. It was horrible. When he was injured on the job, the Navy decided not to give him a medical discharge, and instead they said it was his fault and gave him a less than honorable discharge.