Hi Ed,
Welcome aboard planDisney! Thanks for stopping by with your question.
I'm sorry the Disney Cruise Line vacation you are hoping to book is currently unavailable. I took a look at the website and confirmed that all stateroom categories except Inside Staterooms are unavailable for
the itinerary you are interested in.
Disney Treasure sailings are very popular and your dates in March are often highly desirable since many schools have Spring Break holidays.
Unfortunately, there is no waitlist for non-Concierge-level staterooms. Disney Cruise Line only offers a waitlist option if you have another stateroom category booked but you are interested in upgrading to a Concierge-level room. I suggest you keep an eye on the website and see if a
room for a party of five opens up. Another option is to contact a travel agent who specializes in Disney vacations. Many times they can stay up to date with itinerary availability for you.
I know this isn't what you were hoping for, Ed, but I hope this information helps you as you consider your options. Please let us know if we can help in any other way!
Wishing you many magical memories,
Shannon