Momof-3~Five is the max in a standard room at the Dolphin. They will be able to bring in a rollaway, as Nancy wrote. But, the beds with two doubles do not have sofas. The only rooms with Sofa Sleepers, are suites.
Sorry to read about your DS, hope his brace arrives soon. One of my friends has this condition, and had surgery (again) recently to lesson the stress/pain. She too, wears a brace.
Nancy~Thanks for the informative link! Since the cups/mugs at the Swan/Dolphin never change *(and are very different from the annual ones offered at the other official WDW Resorts), guests are "legally" permitted/encouraged to bring the mugs with them upon return visits to use.

I inquired about this when the mugs were initially offered. I bring ours with us on each visit.
Baxie8~Yes. Of all the SPAS in the greater Orlando area, the MANDARA Spa is my favorite!! There is one at the PBH, where we stay each summer before visiting the Dolphin. The offerings are incredible, many Indonesian, all rejuvenating! You will LOVE IT!!
http://www.mandaraspa.com/locations/north_america/orlando_swandolphin.htm
luvdmouse~You're welcome!

So happy to read everything worked out with respect to the inconvenience! Your stay will be markedly different with the wonderful convenience of CL. Just wait until you see all you have available for you and your family. I am so happy you followed my advice, and called to kindly ASK for CL! Sometimes, you must be direct, and ASK for what you want. All is well, that ends well. You are all set now!!
TTFN...DF99
