Admittedly, we made a an ettiquette mistake. We learned from this. Moral of the story: always plan for 100% attendance.
Backstory: We are on a really strict budget. We are having the short ceremony and lunch reception in the same location. We aren't having a cocktail hour. We decided to have the reception tables set up during the ceremony to avoid a shuffling of guests while tables get set up. We want to transition very smoothly and quickly from ceremony to food being served to avoid hungry guests. We're having an 11:00 ceremony that will be only 15-20 minutes long and we plan to have the buffet start at 11:30-- even if things are running late it will begin by 11:45. So it made more sense to have the escort cards set up so guests can go directly to their proper tables.
The Problem: The main floor of the venue seats 100. The loft seats 30. We invited 108 people, hoping that only 100 would come and we wouldn't have the use the loft. You guessed it: everyone is coming. We can't shove another 8 people into the main floor; it's already a little crowded. I would like to seat 20-30 people in the loft so it doesn't feel too isolated. It isn't a horrible problem because they can see everything and hear everything and many people seat people in the loft for ceremonies at this wedding, but it feels a little off.
Do you have any advice about who to seat in the loft? Kids? Friends? Should I ask people and give them the option?