DebAtSea

They work a little differently.  The discount cruise sites are basically large TAs.  They can reserve blocks of rooms and lock in a set price for that group of rooms.  This price may be lower than what the current advertised rate is because they locked in that price early on before prices increased.  I don't believe they are allowed to publish this rate and they have to show the same lowest rates as the cruise lines are offering directly.  However if you get a quote from a TA and they happen to have that particular cruise locked in at a group rate, they can offer that to you.
Generally you will see the big TAs advertise "discounts" in the form of incentives they you get with booking from the TA such as OBC, prepaid gratuities, specialty dinners, wine, etc.  The TA is using some of their commissions to cover these incentives which they can buy from the cruise line in bulk at a reduced rate.

Take me along? I need a cruise today! 

For $120 that better come with a "happy ending"

I love going to the MDR for breakfast on every cruise everyday.  Oh I will graze at the Windjammer after the MDR breakfast for a little pastry or muffin.  I don't think I've ever had lunch in the MDR.  I'm not really a lunch person.  I always go the the MDR for dinner too.  I like getting to know the waitstaff.  

Driving from Orlando to Miami today.  Tomorrow we’re leaving for our first time cruising on Symphony!!!!  So excited to try an Amped Oasis class ship and an Owners Suite!!!!  We’ve only been on Allure and Oasis so far!!!  We’re sailing with our almost 8 year old son and he’s really looking forward to trying all 5 of the slides!!!!!  He also can’t wait to go back to Cococay to ride the Daredevil again!
Any recommendations for things we shouldn’t miss on Symphony?

Feb 28. Sandwiched between two Disney visits that I'm only taking because of the cruise. I blame Royal  Caribbean for all of this.