Wedding RSVP Tracking and Follow-up System

Help me create an RSVP tracking system. Wedding date: [when], RSVP deadline: [date], Guest count invited: [number], Response method: [online/mail/both], Information needed: [attendance/meal choice/plus one name/song request/dietary needs], Current response rate: [percentage], Non-responders: [how many], Deadline approaching: [days until], Awkward situations: [guests who haven't responded you need to chase], Vendor deadlines: [when final count needed]. Create: Tracking spreadsheet template, follow-up email templates, phone script for calling non-responders, diplomatic language for various situations, deadline extension strategy, and final count calculation guide.