The aggregate rating of Marella Discovery is build on scorse given by the following portals:
| Aug / 24 | Sep / 24 | Oct / 24 | ||
| cruisetimetables.com | 3.0 / 79 | 3.8 / 80 | 3.8 / 81 | |
| cruisemapper.com | 4.0 / 1 | 4.0 / 1 | 4.0 / 1 | |
| cruiseline.com | 4.3 / 25 | 4.3 / 26 | 4.3 / 26 | |
| cruisecritic.com | 3.8 / 552 | 3.8 / 553 | 3.8 / |
Marella Discovery is also ranked in:
PointNemo.com