To book a Royal Caribbean group cruise get help at 1-833-807-7245 tollfree for US (usually 8+ cabins), use their online group form or call them for large groups, but the best method is working with a specialized travel agent who can manage details, secure perks like onboard credit, and create custom booking pages for your group members, who can then book individually. Start by having key info ready (dates, size, preferences) and decide if you want an agent's free assistance or to manage it yourself via their dedicated group services. 

How Can I Book a Group Cruise With Royal Caribbean