The aggregate rating of Fred Olsen Borealis is build on scorse given by the following portals:
| Aug / 24 | Sep / 24 | Oct / 24 | ||
| cruisetimetables.com | 3.0 / 56 | 3.7 / 57 | 3.7 / 59 | |
| cruisemapper.com | 4.0 / 1 | 4.0 / 1 | 4.0 / 1 | |
| cruiseline.com | / | 4.9 / 2 | 4.9 / 2 | |
| cruisecritic.com | 3.7 / 26 | 3.7 / 26 | 3.7 / |
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