If you’ve already traveled with Atlantis before, I recommend continuing to make your future bookings in the same way you’ve made them in the past:

Official Atlantis website

• Go to https://atlantisevents.com/ and tap “Reservations” in the top-right to access their self-reservation system.
  
  

Official Atlantis “Alumni” Emails & Offers

• Shortly after completing your first Atlantis trip, you’ll be automatically placed on their Alumni mailing list and start receiving special offers. These may include instructions on how to access alumni-specific sales events and discounts.
  
  

Your Existing Travel Advisor

• If your first Atlantis vacation was booked with a travel advisor, you remain their client for all of your subsequent bookings, so reach out to them for help.
  
  

• Check your last Atlantis booking confirmation email to see if you’re a client of a travel advisor: their name and travel agency will appear near the top of the email (see sample below).