In Brave New World, how did the return from the reservation change Bernard's life?
Having not only braved the world of the savages in the Reservation but also survived and bringing one of them back with him who was sired by the Director of Hatcheries greatly changes Bernard's life. Before his position in his caste was questioned, and he was even threatened by the self-same Director of Hatcheries with being transported because he was not sufficiently infantile enough. However, when he returns, the text makes it clear that his life is transformed:
It was John, then, they were all after. And as it was only through Bernard, his accredited guardian, that John could be seen, Bernard now found himself, for the first time in his life, treated not merely normally, but as a person of outstanding importance. There was no more talk of the alcohol in his blood-surrogate, no gibes at his personal appearance... As for the women, Bernard had only to hint at the possibility of an invitation, and he could have whichever of them he liked.
It is clear then that Bernard's relationship with John gives him star-status and transforms him from a lowly person who everyone avoided and gossiped about to someone who was sought after and courted by the rich and famous.