How Large of a Facility Do I Need to Rent?
So, consider this information from a person who has been in the wedding planning business since 1994;
"From my experience, 15-20% of guests who RSVP'd 'yes', will not show. And about 5-10% will show that either did not RSVP or RSVP'd 'no'."
To seat 96 guests you will need a space 30' x 40' for 12 round tables
To seat 96 people you will need a space 20' x 40' for 12 oblong tables.
Add additional footage as indicated for each area.
Wedding Party 5' x 20' for 2 oblongs 8' long placed end to end to seat 8
Bar Area 10' x 10'
Sign In Table 5' x 10'
Gift Table 8' x 10'
Cake Table 10' x 15'
Buffet 6' x 30'
DJ 10' x 20'
Using the above stats you would need a minimum of 2200 square feet to accommodate 96 guests, a wedding party of 8 and a dance floor.
To adjust for additional guests add 10 square feet for every round table that seats 8. If using oblong tables allow 8.3 to 9.4 square feet per table.
Hopefully this will give you a starting point in determining how much room you need, based on your guest count.