Just found this on the Atlantis FAQ's- Good to know the rate reduces if you purchase a week of access.
Is there internet service in the rooms?
Enjoy the freedom of wireless (WiFi) internet access. Service is available at the Beach Tower lobby, Coral Lounge in the Coral Towers lobby, Plato's Lounge in the Royal Towers lobby and Harborside. WiFi is included within your daily resort fee for stays at Beach Tower, Coral Towers, Royal Towers, The Cove Atlantis and The Reef Atlantis. Harborside Internet fees are as follows:
24 hours-$21.95
48 hours-$43.90 120 hours-$109.75
72 hours-$65.85 144 hours-$131.70
96 hours-$87.80 168 hours-$153.65
Number of devices: 4
Speed: 5MB
All guest rooms offer two options for visitors who prefer to access the internet in the privacy of their rooms. A wired data port is available for those who bring their laptop and wireless internet is available via the NXTV interactive menu. Wireless keyboards are provided in each room and the pricing for these two options is the same as listed above.
Complimentary Internet Access is available for 20 minutes per day, per person at 4 Stations in the Coral Towers Library.
Please note that all prices, features, options and availability of Atlantis Internet Services are subject to change at anytime without notice.
*A 7.5% Value Added Tax (VAT) will be added to internet fees.