I went for the Spectrum of The Seas (5D4N Penang & Phuket) cruise in May 2023. 1) Should you download the Royal Caribbean mobile apps? YES YES YES. The Royal Caribbean mobile apps is a must download before you onboard the cruise. It contain SeaPass (Room number, Emergency gathering location and etc), Directory (Opening hours, Map), Remainder for your calendar which you set and Etc. You should download it as soon as possible or when you made the final payment for your cruise. One of the top reason is it will show you when you can select your check in timing (Estimate 45days before your sail date). This is first come first serve. Tips #1: You should select the earliest check in timing if possible. Earliest timing is 11am. Priority is given to those who reached within their selected check in timing range. Board early to avoid the crowd + eat your lunch + settle down + enjoy the facilities (especially swimming pool)....