Direct answer
Yes — hiring a wedding planner for a 100-guest destination wedding is usually worth it. Planners save time, reduce stress, handle local logistics, negotiate with venues/vendors, and help manage guest experience and legal requirements. Since you already have a travel agent, consider a planner who specializes in destination weddings to coordinate ceremony details, local vendors, and on-site execution.
Key considerations and steps
Budgeting and contracts
Planner vs travel agent roles
Guest logistics and communication
Legal vs symbolic ceremony
Entertainment, catering, & vibe
Resort/Location notes (based on your list)
St. Lucia (Coconut Bay Beach Resort and general)
Antigua
Costa Mujeres, Mexico (Majestic Elegance Costa Mujeres & Secrets Playa Blanca)
Choosing between Caribbean vs Mexico for your group
Questions to ask resorts/wedding planners
Practical tips and timeline
Final advice
If you want, I can: