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Blocking out the internet and running Y, then X eventually. Going to take it at a moderate pace, don't see the need to rush through it since you could miss a lot.
Already happened, it's semi-XY related in that some of the prizes are. Kalos starter plushies, XY download codes, etc.
https://pokemon.promo.eprize.com/hunt/:b=chrome/
Poke Transfer is free, Poke Bank costs a yearly fee of 500 yen (5$). You need Poke Bank to use Poke Transfer.
Edit: To be more clear, they are both free apps but one you have to pay to use yearly.