With only 2 weeks left until my proposed travel date, and having heard nothing from BBB or the MA AG's office, today I called Docker's Consumer Relations Center at 800-362-5377. An actual human answers the line!
The very polite CSR took my information ("was it the flight or the hotel?") and promised to send my complaint to TLC Marketing...and that Dockers will call me back later this week.
I don't know what the outcome will be, but the conversation was reassuring.