I thought about the villas, but we don't need laundry (will do at the Residence Inn the night before the cruise), and I've been instructed that cooking will be prohibited during this stay - so we don't need the kitchen.
I have stayed in an AKL room with bunk beds - it was very nice. I gather Wilderness lodge has a similar option.
Curiously, most of the deluxe resorts are listed as either having rooms with two beds plus a sofabed, or allowing a rollaway, so our options include Contemporary, Beach Club, Wildnerness Lodge, Grand Floridian, AKL and Polynesian.
Boardwalk has a daybed, but it's a bit small from what I hear. Port Orleans Riverside also has a smaller trundle bed. My guess is neither are good options for us.
So I guess I'll continue to contemplate the options