(1) excessive use of "do" in announcements by the FAs -- "We do offer complimentary pretzels, peanuts, and Biscoff cookies"; "We do request passengers to use only the lavatory in the cabin in which you are seated"; "We do require all portable electronic devices to be placed in airplane mode prior to taxi"
(2) FAs and GAs saying "We do have a completely full flight today" after the GA says no volunteers arnecessary because they're going to go out with 5 or 6 empty seats (yeah, I know WHY they're saying it, but this is the "Hall of Rants" thread)