I know you should always plan on 100% attendance which is fine. We can deal with that. But I'm wondering about people's personal experience. My wedding is the day before a holiday (December 30th) in Ohio, so snow is a risk. About 20% of our guest list are distant family or acquaintances from at least 6 hours away. From personal experience, do you think it's safe to assume that that 20% probably won't make it? I'm particularly wondering about the holiday weekend wedding, because I have heard both - assume less people are coming and assume more people are coming because it's a holiday.