We'll be having approximately 100 guests. The venue says we should only give like 15 minutes for seating. What do you guys think? I think a 15 minute window isn't enough, but I'm also not very well versed on weddings or big events in general. With the venue setup, nobody would be allowed in once ceremony time hits(they'd have to wait outside, but the ceremony's going to be quite short), so I want to make sure everyone has ample time.