The buy one get one free on boarding day is very common to see although not 100% of the time. Remember you will be paying onboard prices at this point so it will be buy one at nearly $100 a day and get 1/2 off
Lyft can enter the terminal. Uber has agreed to pay the port fee and will be able to enter property, but I have not yet heard of a start date for this.
Ironically I just received, last night, a rather lengthy surgery on the MDR.
The survey covered everything from menu design, food choices, lighting, sound, place settings; and yes, expectations of wait staff.