Regarding expenses, here's a brief overview.
The biggest drain on the budget is transportation, especially with our beloved Russian Railways (RZD). If you live nearby, it's fine, but if you're coming from further away, it's a problem. Buying tickets in advance is much cheaper than buying them a week before.
Be sure to buy return tickets right away; it'll be hard to get out of town during the holidays.
The second expense is accommodation. The option suggested by Tvarina is quite good. If we can gather 15-20 people and the total cost is $2, then $100-120 per person for the entire tournament is very reasonable.
The third expense is food. It's acceptable if you avoid the central cafes. They'll try to convince you that $100 for lunch isn't expensive, but don't believe them; it's too much. It's better to find a decent cafeteria. In general, budget around 2000 rubles for 4 days.
Then there's poker; some people even manage to lose all their money on the train before they even arrive. It's best not to do that.
No strip clubs for me; I'm a good family man.
A sauna sounds good, and so does a snowmobile ride, but it looks like I'll have to spend a lot of time judging, so I'll probably have to pass on those as well.