Time: All the time
Frequency: All the time
World name: Lamia
Character name: Shrimp Tempura
Party or solo: 2 person party with Goatbane Baneofgoats
Steps:
1. Make a 2 person party with groom
2. Equip Promise of Passion (Gold) bracelets
3. Talk to Etoinelle
4. Click "Make a reservation for your Ceremony of Eternal Bonding"
5. Click on any time slot
6. She says "You cannot make a reservation unless you form a party of two with your partner, and you both equip yourselves with promise wristlets."

We did both of those things. We completed all the The Ties That Bind tasks, and the quest now says "You and your partner have now completed all mandatory requirements, and you may now plan, schedule, and host your Ceremony of Eternal Bonding." We already spent 20 dollars on the gold plan, we want to get married and get our mount.