Wow, your costs for a 200 person event are going to be all over the place. From the cheap end (banquet hall) starting at about $60 a head (they already have a facility, staff, chairs/tables/linens and horrible food) to upwards of $200 a head if you're renting a facility, renting equipment, hiring an outside caterer and having them provide booze.
Unfortunately or fortunately, we don't handle events that large (keeping our parties under 100). But, if you need any suggestions, feel free to contact me. Also, we can help with the bridal shower or rehearsal dinner if you want to eat something good before the wedding.
Molly
FIG Catering, For Intimate Gatherings
molly@FIGcatering.com
www.FIGcatering.com