I'm sure this has been asked and answered a thousand times before, but can guests at the swan and dolphin make ADRs for their whole trip starting from 180 days before check-in?
No. It only works for the Disney owned and operated resorts. Either you have to call every day for the 180th day out or call 180 days prior to checkout date to get all at one call.
That is one of the advantages of staying ay a Disney owned and operated location.