I bought games so I could get the achievements, and you know what it got me? Nothing.
How could you have got nothing? Three tickets = freebie, no luck involved. Of course, the freebies were almost all crappy DLC, so you've actually got a better chance at winning something worthwhile this time.
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"I'm Commander Shepard, and you're standing in the biggest library in Citadel Space. Look me up."