This was inevitable and the ext accompanying it is misleading. There is no No Sail Order anymore. There is a conditional sail order. Instead of trying to undo the CDC’s orders the industry and its supporters should be concentrating efforts on getting more collaboration on meeting the already provided guidelines.
The provided guidelines aren't even complete yet. They have the first steps (phase 2a), but they don't have everything they need to even see the full path ahead to see if it makes sense to take the first steps. They don't even have phase 2b, to see what simulated voyages would look like, let alone the phases after that. They have been asking for the complete package but haven't received it. They didn't even get 2a until a few weeks ago.
The guidelines they do have are unworkable from a financial and practical standpoint, in my opinion. The cruise lines have said as much too. There is no hospital in the US that is going to guarantee enough reserved capacity to take thousands of potential passengers and crew from an infected ship, and the guidelines require they have that arrangement with one hospital
and a backup. They would also need thousands of hotel rooms booked and sitting empty for every crewmember and passenger on every ship they have sailing from a US port (minus some small percentage of crew who is fully vaccinated, and not infected, and can be provided a separate living quarters and bathroom on the ship). And the hotels rooms they book must have separate ventilation systems for each room - as far as I know, there are no hotels that even meet that last requirement. But, even if there are, the financial impact of the reserved hospital space and thousands of hotel rooms makes cruising at a profit essentially impossible for major lines. The cruise lines have billions of dollars on the line and would be complying the with the guidelines if they thought there was a practical manner for doing so. Trust me, they aren't just twiddling their thumbs or being stubborn.
I still think the bill was a terrible idea from a strategic standpoint. But, the CDC should come to the table with reasonable requirements. Fully-vaccinated ships should greatly reduce the need for the type of requirements the CDC issued. For an agency that should be in touch with the science and pro-vaccine, I sure wish it would act like it has some level of confidence in the vaccines.