We aren't having a typical buffet or plated dinner, we are going with a lounge feel with passed hors d'oevres, three stations and an open bar. We are inviting 120 people and are planning on having tables/chairs for 78 plus tall boy cocktail tables and lounge seating throughout our venue (mansion). There will be no assigned seating as we are trying to encourage mixing and mingling which doesn't often happen at weddings. We aren't having a cocktail hour, the food and liquor will be available immediately following the ceremony which will take place on site 100 yards away in a wooded grove.
I'm starting to worry that we should have more seating. We will be renting several large ottomans, lounge benches etc. but we want people to move around, talk and drink and not feel confined to one table or area.