In Dec last year, I used HK Express for a positioning flight to KIX. At that time, I could still book a fare that included 7kg of hand carry. I booked the exit row 26F on an A321ceo. I did not prebook any meal, nor did I purchase a meal on board.

The flight was perfectly fine, and with the extra leg room of the exit row seat, it felt like sitting in 60K of Cathay's A350's. There was not much extra service, but I did not expect any for an LCC.

The flight attendant sitting across from me was quite chatting and pleasant; she was quite friendly. In hindsight, though, I probably would book 26A instead, since the A seat does not have the flight attendant in front of you, and you can enjoy the extra leg room throughout the entire flight.