not "anyone" but "those who won tix on the "Radio NRJ"'s stupid competitions, like "first 200 persons who will take photo in transformer's costume, will get tix" or "let a thousand people held a circle on the rollers, and only 100 of them receive tickets", or "we'll say the code live on air at random time, and first 100 who will fill a form (name/surname/email/code from radio) will get tix". and don't forget, LP isn't format for NRG radio, it's not dance music (at least they wasn't in 2011). So - It wasn't easy at all.
And don't forget - Russia is VERY big, and in every corner there's a fans. Personally, I've traveled 2,5 days on the train to get there, and the same to get back home. And, because they've announced it too late, I had to buy the worst place in the train.