How much would a wedding cost at Tavern on the Green, for 250 people with all amenities in summer of 08?
What I would do is call Tavern on the Green and ask prices from the wedding coordinator. You can get a general idea of what it will cost you. Being a New Yorker, I know it will cost you quite a bit. Be prepared for $150 to $200 a person according to what you pick as entrees, amenities, etc. This wedding could cost in the area of $200K. Good Luck to you.
I really can’t help you there, you would have to call as everyone else has been saying. I can offer some info though that no one else has though. Check out partypop.com for wedding stuff. If you are looking for videographer and photographer you should check out Grand Wushu Productions. They are listed as covering new york, it looks like they do pretty awesome work. You should check out their sample DVD. Their contact info is on their page on there. Go to vender search and type the name in. Good luck!