anyone know of a place for Rehersal dinner spot around Union Square SF on a friday night for 40ppl that won't break the bank

Everything in SF near Union Square is on the pricey side.  What is your budget per person?

What kind of food do you want? :)

Like to stay under $2500 total

I would take anything food wise but chinese is out

Hmm.  I say yelp is definitely your friend!

Here's a search for $ to $$ in Union Square, sorted from "highest rated"  (Some of these are cafes/bakeries, so you can discount those.)

http://www.yelp.com/search?find_desc=restaurant&ns=1&find_loc=union+square%2C+san+francisco#attrs=RestaurantsPriceRange2.2,RestaurantsPriceRange2.1&cflt=food,restaurants&l=p:CA:San_Francisco::Union_Square&sortby=rating

Sounds like there's some solid picks on there!

Two potential standouts:

http://www.yelp.com/biz/buckhorn-grill-san-francisco-2

http://www.yelp.com/biz/white-horse-tavern-and-restaurant-san-francisco

I agree with SanFran...Good Luck!

Yelp is a great suggestion!

Foley's Irish Pub is an SF establishment, and one of my favorite restaurants. They have a separate room with full bar that you can rent for your party. Service is great, and I have never been disappointed with the selection of food and drink. Get the dungeoness crab cakes - they are delicious! They are known for their lemon drops, too.

http://www.johnnyfoleys.com/

No Chinese, but how about Thai? http://www.yelp.com/biz/osha-thai-san-francisco Delicious foods and drinks, nice setting, and great prices, too. It's technically SOMA but it's pretty close to Union Square

Also, this place looks like it can accommodate a big party: http://www.yelp.com/biz/puccini-and-pinetti-san-francisco