Activity for EML

How much cake did you order/are planning on ordering? I'm hoping to keep our guest list about 120. Would you plan on ordering enough cake to ensure there's a serving for everyone or would you order less assuming there will be people who don't eat...

Has anyone here used a bridal buddy? My dress is a big satin ballgown. I'm wondering if they actually work for ensuring going to the bathroom the day of is less of a pain!