Getting married in a library usually means you can wander among the books, but you actually have to use a completely different space for your ceremony. Here, you actually have your ceremony in the stacks! A book lovers dream!

You can have both your ceremony and reception here and I have seen 2 weddings with around 100 guests fit well. I don't know if you could honestly fit many more guests though comfortably.

The Athenaeum allows you to take photos almost anywhere in the library and is very responsive and accommodating- it's not like one of those massive "wedding factories". They don't do many weddings, so it's a lot more relaxed.

The reception area/dance area is broken up downstairs by the stairs coming down in the middle of the room, so you can easily divide dinner from dancing. However, neither space is particularly large so you can dance and do the hora, but it's narrow.

If you have any guests with mobility issues, there are a lot of stairs both getting into the venue, going down to the reception area, etc. But they do have entrances that are accessible but you'll need to think ahead to make it run smoothly.