While both are Oasis-class sister ships, the main difference in 2026 lies in their amenities and recent renovations. Oasis of the Seas underwent a massive "Royal Amplification" in late 2019, adding features that Allure currently lacks, such as the Ultimate Abyss (a 10-story dry slide), the Perfect Storm trio of water slides, and the "Lime and Coconut" poolside bar concept. Allure of the Seas, which had its major renovation delayed, maintains a more "original" Oasis-class feel but has its own unique features like the Samba Grill (Brazilian steakhouse) and the Champagne Bar, which was replaced on Oasis. In 2026, Oasis is generally considered the "higher-thrill" ship for families due to the water slides, while Allure is often slightly cheaper and appeals to those who prefer the classic layout without the "amplified" bells and whistles. Both ships share the signature seven-neighborhood design, including Central Park and the Boardwalk.