I can'r speak about the Marina which is showing it's age or about the Plaza.
However, at the Taj, they have spent countless millions not only putting up a new tower but also refurbishing all the rooms as well as making many improvements in the public areas.

That said, they are their own worst enemies when it comes to customer care and customer service.
As an example, the Harrah's properties are running a promotion at present. All you have to do is show them a premium player card from another property like a Chairman's card from the Taj and they will automatically elevate you to Diamond level, give you access to their players lounge for a year, put $50 into your food comp account and give you $200 in free slot play.

The Taj's response to that is Duh.... or, maybe they will throw another toaster at you.

As someone said in an earlier post a few weeks ago, for this month the revenue drop will be blamed on the wind.
I guess next month it will be April Showers
They won't wake up if you hit them with a cattle prod