Crabby,
With all due respect, isn't this your party? Why would there be smoking? If there is smoking, then have the party planner make a smoking area outside and make sure you don't visit that wing of the house :)
Have your coping mechanisms ready by your side and you will fair well. This is a happy day so take the time to enjoy yourself and congratulate yourself on 6 days done!
Josie
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The SSC Support Team.