1. Well you might get one if you're a good boy and have good friends at the convention.
2. Joining Pocky Club means you get the newsletter, help us with stuff at the convention (deliveries, clipboarding, entertaining people during the panel, manning the booth, donating Pocky) and coming to a meeting now and then if you can make it (no car in Battleground, I understand if you can't get around as easy). You don't even have to cosplay to be in the Club, but it sure helps!
3. Generally, yes. I especially like to eat Pocky 3 at a time. Once I get a few boxes of the milk Pocky I'm going to eat a milk, strawberry, and choco stick at the same time to have NEOPOLITAN POCKY!