For most cruises, 75 days in advance is the final payment deadline. 90 days comes into play if you're Castaway Club members and want to book excursions and activities early. You can pay earlier, doubt the TA would turn you down
Thank you for the info. Our call to DCL resulted in them directing us back to TA as DCL would not provide info that might be different than TA. TA is away until Tues and we didn't want to miss deadline. Your help has been awesome.