Norwegian has amazing pricing for sailings now through Jan. 18:
Just booked the Epic.
perks included (but end tomorrow):
kids sail free (got 2, so woo-hoo!!!)
Balcony for the price of inside cabin (on other lines)
bottle of wine
chocolate strawberries in cabin
free dinner in the Italian restaurant (cover charge waived)
bottom line: 4 of us sail in upgraded (balcony) cabin for under $2000 on this sailing, plus the freebies.
Other sailings, notably in late Nov. and early December, are even less.
Also, Inside cabins work out to 65-75% of the balcony rates, but are 122 sq. feet instead of approx. 200 sq. ft. for the balcony.
Mini-suite and Haven perks are even better (essentially, more free dinners).
I suspect with the cancelled sailing(s) for Allure of the Seas, that they might just be extending this promotion....